diff --git a/.github/workflows/ci-master-pr.yml b/.github/workflows/ci-master-pr.yml
index 9749057..d457b65 100644
--- a/.github/workflows/ci-master-pr.yml
+++ b/.github/workflows/ci-master-pr.yml
@@ -4,19 +4,22 @@ on:
   push:
     branches:
     - master
+    - release # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
   pull_request:
     branches:
     - master
-
 jobs:
-  build-v1-21-0-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-22-0-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.21.0-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-alpine-3.8
+      VARIANT_TAG: v1.22.0-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.22.0-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.22.0-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -29,96 +32,125 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-21-0-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.21.0-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
     - name: Login to docker registry
       run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
         DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+          ${{ github.repository }}:latest
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
 
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-21-0-git-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-22-0-envsubst-git-jq-kustomize-ssh-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.21.0-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-git-alpine-3.8
+      VARIANT_TAG: v1.22.0-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.22.0-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.22.0-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -131,45 +163,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-21-0-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-21-0-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.21.0-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-jq-alpine-3.8
+      VARIANT_TAG: v1.21.0-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.21.0-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.21.0-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -182,45 +293,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-21-0-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.21.0-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-kustomize-alpine-3.8
+      VARIANT_TAG: v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -233,45 +423,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-21-0-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-20-4-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.21.0-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-ssh-alpine-3.8
+      VARIANT_TAG: v1.20.4-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.20.4-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.20.4-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -284,45 +553,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      VARIANT_TAG: v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -335,45 +683,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-20-4-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-19-7-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.20.4-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-alpine-3.8
+      VARIANT_TAG: v1.19.7-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.19.7-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.19.7-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -386,45 +813,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-20-4-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.20.4-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-envsubst-alpine-3.8
+      VARIANT_TAG: v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -437,45 +943,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-20-4-git-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-18-15-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.20.4-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-git-alpine-3.8
+      VARIANT_TAG: v1.18.15-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.18.15-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.18.15-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -488,1932 +1073,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
     - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-15-12-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.15.12-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-ssh-alpine-3.8
+      VARIANT_TAG: v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2426,45 +1203,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-17-17-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      VARIANT_TAG: v1.17.17-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.17.17-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.17.17-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2477,45 +1333,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-14-10-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.14.10-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-alpine-3.8
+      VARIANT_TAG: v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2528,45 +1463,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-14-10-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-16-15-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.14.10-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-envsubst-alpine-3.8
+      VARIANT_TAG: v1.16.15-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.16.15-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.16.15-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2579,45 +1593,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-14-10-git-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.14.10-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-git-alpine-3.8
+      VARIANT_TAG: v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2630,45 +1723,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-14-10-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-15-12-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.14.10-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-jq-alpine-3.8
+      VARIANT_TAG: v1.15.12-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.15.12-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.15.12-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2681,45 +1853,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-14-10-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.14.10-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-kustomize-alpine-3.8
+      VARIANT_TAG: v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2732,45 +1983,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
-  build-v1-14-10-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
+
+  build-v1-14-10-alpine-3-8:
+    runs-on: ubuntu-latest
     env:
-      VARIANT_TAG: v1.14.10-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-ssh-alpine-3.8
+      VARIANT_TAG: v1.14.10-alpine-3.8
+      # VARIANT_TAG_WITH_REF: v1.14.10-alpine-3.8-${GITHUB_REF}
+      VARIANT_BUILD_DIR: variants/v1.14.10-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2783,45 +2113,124 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
+
   build-v1-14-10-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     env:
       VARIANT_TAG: v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8
       # VARIANT_TAG_WITH_REF: v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
       VARIANT_BUILD_DIR: variants/v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -2834,37 +2243,130 @@ jobs:
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
+
+  # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+  converge-master-and-release-branches:
+    needs: [build-v1-22-0-alpine-3-8, build-v1-22-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-21-0-alpine-3-8, build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-20-4-alpine-3-8, build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-19-7-alpine-3-8, build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-18-15-alpine-3-8, build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-17-17-alpine-3-8, build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-16-15-alpine-3-8, build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-15-12-alpine-3-8, build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-14-10-alpine-3-8, build-v1-14-10-envsubst-git-jq-kustomize-ssh-alpine-3-8]
+    if: github.ref == 'refs/heads/release'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Merge release into master (fast-forward)
+        run: |
+          git checkout master
+          git merge release
+          git push origin master
+
+  # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
   resolve-release-tag:
     runs-on: ubuntu-latest
     outputs:
@@ -2899,8 +2401,9 @@ jobs:
           echo "::set-output name=TAG::$TAG"
       - name: Print outputs
         run: echo ${{ steps.resolve-release-tag.outputs.TAG }}
+
   update-draft-release:
-    needs: [build-v1-21-0-alpine-3-8, build-v1-21-0-envsubst-alpine-3-8, build-v1-21-0-git-alpine-3-8, build-v1-21-0-jq-alpine-3-8, build-v1-21-0-kustomize-alpine-3-8, build-v1-21-0-ssh-alpine-3-8, build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-20-4-alpine-3-8, build-v1-20-4-envsubst-alpine-3-8, build-v1-20-4-git-alpine-3-8, build-v1-20-4-jq-alpine-3-8, build-v1-20-4-kustomize-alpine-3-8, build-v1-20-4-ssh-alpine-3-8, build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-19-7-alpine-3-8, build-v1-19-7-envsubst-alpine-3-8, build-v1-19-7-git-alpine-3-8, build-v1-19-7-jq-alpine-3-8, build-v1-19-7-kustomize-alpine-3-8, build-v1-19-7-ssh-alpine-3-8, build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-18-15-alpine-3-8, build-v1-18-15-envsubst-alpine-3-8, build-v1-18-15-git-alpine-3-8, build-v1-18-15-jq-alpine-3-8, build-v1-18-15-kustomize-alpine-3-8, build-v1-18-15-ssh-alpine-3-8, build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-17-17-alpine-3-8, build-v1-17-17-envsubst-alpine-3-8, build-v1-17-17-git-alpine-3-8, build-v1-17-17-jq-alpine-3-8, build-v1-17-17-kustomize-alpine-3-8, build-v1-17-17-ssh-alpine-3-8, build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-16-15-alpine-3-8, build-v1-16-15-envsubst-alpine-3-8, build-v1-16-15-git-alpine-3-8, build-v1-16-15-jq-alpine-3-8, build-v1-16-15-kustomize-alpine-3-8, build-v1-16-15-ssh-alpine-3-8, build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-15-12-alpine-3-8, build-v1-15-12-envsubst-alpine-3-8, build-v1-15-12-git-alpine-3-8, build-v1-15-12-jq-alpine-3-8, build-v1-15-12-kustomize-alpine-3-8, build-v1-15-12-ssh-alpine-3-8, build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-14-10-alpine-3-8, build-v1-14-10-envsubst-alpine-3-8, build-v1-14-10-git-alpine-3-8, build-v1-14-10-jq-alpine-3-8, build-v1-14-10-kustomize-alpine-3-8, build-v1-14-10-ssh-alpine-3-8, build-v1-14-10-envsubst-git-jq-kustomize-ssh-alpine-3-8, resolve-release-tag]
+    needs: [build-v1-22-0-alpine-3-8, build-v1-22-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-21-0-alpine-3-8, build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-20-4-alpine-3-8, build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-19-7-alpine-3-8, build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-18-15-alpine-3-8, build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-17-17-alpine-3-8, build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-16-15-alpine-3-8, build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-15-12-alpine-3-8, build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-14-10-alpine-3-8, build-v1-14-10-envsubst-git-jq-kustomize-ssh-alpine-3-8, resolve-release-tag]
     if: github.ref == 'refs/heads/master'
     runs-on: ubuntu-latest
     steps:
@@ -2918,3 +2421,21 @@ jobs:
           tag: ${{ needs.resolve-release-tag.outputs.TAG }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  publish-draft-release:
+    needs: [build-v1-22-0-alpine-3-8, build-v1-22-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-21-0-alpine-3-8, build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-20-4-alpine-3-8, build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-19-7-alpine-3-8, build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-18-15-alpine-3-8, build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-17-17-alpine-3-8, build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-16-15-alpine-3-8, build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-15-12-alpine-3-8, build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-14-10-alpine-3-8, build-v1-14-10-envsubst-git-jq-kustomize-ssh-alpine-3-8, converge-master-and-release-branches]
+    # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+    # if: startsWith(github.ref, 'refs/tags/')
+    if: github.ref == 'refs/heads/release'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      # Drafts your next Release notes as Pull Requests are merged into "master"
+      - uses: release-drafter/release-drafter@v5
+        with:
+          config-name: release-drafter.yml
+          publish: true
+          name: ${{ needs.resolve-release-tag.outputs.TAG }}
+          tag: ${{ needs.resolve-release-tag.outputs.TAG }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/ci-release.yml b/.github/workflows/ci-release.yml
deleted file mode 100644
index 5c0a94e..0000000
--- a/.github/workflows/ci-release.yml
+++ /dev/null
@@ -1,3040 +0,0 @@
-name: ci-release
-
-on:
-  push:
-    branches:
-    - release
-
-jobs:
-  build-v1-21-0-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.21.0-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:latest" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:latest"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-21-0-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.21.0-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-21-0-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.21.0-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-21-0-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.21.0-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-21-0-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.21.0-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-21-0-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.21.0-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-14-10-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.14.10-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-14-10-envsubst-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.14.10-envsubst-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-envsubst-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-envsubst-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-14-10-git-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.14.10-git-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-git-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-git-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-14-10-jq-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.14.10-jq-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-jq-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-jq-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-14-10-kustomize-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.14.10-kustomize-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-kustomize-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-kustomize-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-14-10-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.14.10-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  build-v1-14-10-envsubst-git-jq-kustomize-ssh-alpine-3-8:
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8
-      # VARIANT_TAG_WITH_REF: v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8-${GITHUB_REF}
-      VARIANT_BUILD_DIR: variants/v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-    - name: Clean-up
-      run: docker logout
-      if: always()
-  converge-master-and-release-branches:
-    needs: [build-v1-21-0-alpine-3-8, build-v1-21-0-envsubst-alpine-3-8, build-v1-21-0-git-alpine-3-8, build-v1-21-0-jq-alpine-3-8, build-v1-21-0-kustomize-alpine-3-8, build-v1-21-0-ssh-alpine-3-8, build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-20-4-alpine-3-8, build-v1-20-4-envsubst-alpine-3-8, build-v1-20-4-git-alpine-3-8, build-v1-20-4-jq-alpine-3-8, build-v1-20-4-kustomize-alpine-3-8, build-v1-20-4-ssh-alpine-3-8, build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-19-7-alpine-3-8, build-v1-19-7-envsubst-alpine-3-8, build-v1-19-7-git-alpine-3-8, build-v1-19-7-jq-alpine-3-8, build-v1-19-7-kustomize-alpine-3-8, build-v1-19-7-ssh-alpine-3-8, build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-18-15-alpine-3-8, build-v1-18-15-envsubst-alpine-3-8, build-v1-18-15-git-alpine-3-8, build-v1-18-15-jq-alpine-3-8, build-v1-18-15-kustomize-alpine-3-8, build-v1-18-15-ssh-alpine-3-8, build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-17-17-alpine-3-8, build-v1-17-17-envsubst-alpine-3-8, build-v1-17-17-git-alpine-3-8, build-v1-17-17-jq-alpine-3-8, build-v1-17-17-kustomize-alpine-3-8, build-v1-17-17-ssh-alpine-3-8, build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-16-15-alpine-3-8, build-v1-16-15-envsubst-alpine-3-8, build-v1-16-15-git-alpine-3-8, build-v1-16-15-jq-alpine-3-8, build-v1-16-15-kustomize-alpine-3-8, build-v1-16-15-ssh-alpine-3-8, build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-15-12-alpine-3-8, build-v1-15-12-envsubst-alpine-3-8, build-v1-15-12-git-alpine-3-8, build-v1-15-12-jq-alpine-3-8, build-v1-15-12-kustomize-alpine-3-8, build-v1-15-12-ssh-alpine-3-8, build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-14-10-alpine-3-8, build-v1-14-10-envsubst-alpine-3-8, build-v1-14-10-git-alpine-3-8, build-v1-14-10-jq-alpine-3-8, build-v1-14-10-kustomize-alpine-3-8, build-v1-14-10-ssh-alpine-3-8, build-v1-14-10-envsubst-git-jq-kustomize-ssh-alpine-3-8]
-    if: github.ref == 'refs/heads/release'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - name: Merge release into master (fast-forward)
-        run: |
-          git checkout master
-          git merge release
-          git push origin master
-  resolve-release-tag:
-    runs-on: ubuntu-latest
-    outputs:
-      TAG: ${{ steps.resolve-release-tag.outputs.TAG }}
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - name: Resolve release tag
-        id: resolve-release-tag
-        run: |
-          set +e
-          # E.g. 20210402
-          TODAYS_DATE=$( date -u '+%Y%m%d' )
-          # Is this the first tag for this date?
-          TODAYS_DATE_TAGS=$( git tag --list | grep "^$TODAYS_DATE" )
-          TAG=
-          if [ -z "$TODAYS_DATE_TAGS" ]; then
-              # E.g. 20210402.0.0
-              TAG="$TODAYS_DATE.0.0" # Send this to stdout
-          else
-              # E.g. if there are 20210402.0.0, 20210402.0.1, 20210402.0.2, this returns 2
-              VERSION_MINOR_LATEST=$( echo "$TODAYS_DATE_TAGS" | cut -d '.' -f 3 | sort -nr | head -n1 )
-              # Minor version
-              VERSION_MINOR=$( expr "$VERSION_MINOR_LATEST" + 1 )
-              # E.g. 20210402.0.3
-              TAG="$TODAYS_DATE.0.$VERSION_MINOR"  # Send this to stdout
-          fi
-          echo "TODAYS_DATE: $TODAYS_DATE"
-          echo "TODAYS_DATE_TAGS: $TODAYS_DATE_TAGS"
-          echo "TAG: $TAG"
-          echo "::set-output name=TAG::$TAG"
-      - name: Print outputs
-        run: echo ${{ steps.resolve-release-tag.outputs.TAG }}
-  publish-draft-release:
-    needs: [build-v1-21-0-alpine-3-8, build-v1-21-0-envsubst-alpine-3-8, build-v1-21-0-git-alpine-3-8, build-v1-21-0-jq-alpine-3-8, build-v1-21-0-kustomize-alpine-3-8, build-v1-21-0-ssh-alpine-3-8, build-v1-21-0-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-20-4-alpine-3-8, build-v1-20-4-envsubst-alpine-3-8, build-v1-20-4-git-alpine-3-8, build-v1-20-4-jq-alpine-3-8, build-v1-20-4-kustomize-alpine-3-8, build-v1-20-4-ssh-alpine-3-8, build-v1-20-4-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-19-7-alpine-3-8, build-v1-19-7-envsubst-alpine-3-8, build-v1-19-7-git-alpine-3-8, build-v1-19-7-jq-alpine-3-8, build-v1-19-7-kustomize-alpine-3-8, build-v1-19-7-ssh-alpine-3-8, build-v1-19-7-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-18-15-alpine-3-8, build-v1-18-15-envsubst-alpine-3-8, build-v1-18-15-git-alpine-3-8, build-v1-18-15-jq-alpine-3-8, build-v1-18-15-kustomize-alpine-3-8, build-v1-18-15-ssh-alpine-3-8, build-v1-18-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-17-17-alpine-3-8, build-v1-17-17-envsubst-alpine-3-8, build-v1-17-17-git-alpine-3-8, build-v1-17-17-jq-alpine-3-8, build-v1-17-17-kustomize-alpine-3-8, build-v1-17-17-ssh-alpine-3-8, build-v1-17-17-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-16-15-alpine-3-8, build-v1-16-15-envsubst-alpine-3-8, build-v1-16-15-git-alpine-3-8, build-v1-16-15-jq-alpine-3-8, build-v1-16-15-kustomize-alpine-3-8, build-v1-16-15-ssh-alpine-3-8, build-v1-16-15-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-15-12-alpine-3-8, build-v1-15-12-envsubst-alpine-3-8, build-v1-15-12-git-alpine-3-8, build-v1-15-12-jq-alpine-3-8, build-v1-15-12-kustomize-alpine-3-8, build-v1-15-12-ssh-alpine-3-8, build-v1-15-12-envsubst-git-jq-kustomize-ssh-alpine-3-8, build-v1-14-10-alpine-3-8, build-v1-14-10-envsubst-alpine-3-8, build-v1-14-10-git-alpine-3-8, build-v1-14-10-jq-alpine-3-8, build-v1-14-10-kustomize-alpine-3-8, build-v1-14-10-ssh-alpine-3-8, build-v1-14-10-envsubst-git-jq-kustomize-ssh-alpine-3-8, converge-master-and-release-branches]
-    if: github.ref == 'refs/heads/release'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      # Drafts your next Release notes as Pull Requests are merged into "master"
-      - uses: release-drafter/release-drafter@v5
-        with:
-          config-name: release-drafter.yml
-          publish: true
-          name: ${{ needs.resolve-release-tag.outputs.TAG }}
-          tag: ${{ needs.resolve-release-tag.outputs.TAG }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file
diff --git a/README.md b/README.md
index fdc96db..3173000 100644
--- a/README.md
+++ b/README.md
@@ -10,60 +10,22 @@ Dockerized `kubectl` with useful tools.
 
 | Tag | Dockerfile Build Context |
 |:-------:|:---------:|
-| `:v1.21.0-alpine-3.8`, `:latest` | [View](variants/v1.21.0-alpine-3.8 ) |
-| `:v1.21.0-envsubst-alpine-3.8` | [View](variants/v1.21.0-envsubst-alpine-3.8 ) |
-| `:v1.21.0-git-alpine-3.8` | [View](variants/v1.21.0-git-alpine-3.8 ) |
-| `:v1.21.0-jq-alpine-3.8` | [View](variants/v1.21.0-jq-alpine-3.8 ) |
-| `:v1.21.0-kustomize-alpine-3.8` | [View](variants/v1.21.0-kustomize-alpine-3.8 ) |
-| `:v1.21.0-ssh-alpine-3.8` | [View](variants/v1.21.0-ssh-alpine-3.8 ) |
+| `:v1.22.0-alpine-3.8`, `:latest` | [View](variants/v1.22.0-alpine-3.8 ) |
+| `:v1.22.0-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.22.0-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
+| `:v1.21.0-alpine-3.8` | [View](variants/v1.21.0-alpine-3.8 ) |
 | `:v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
 | `:v1.20.4-alpine-3.8` | [View](variants/v1.20.4-alpine-3.8 ) |
-| `:v1.20.4-envsubst-alpine-3.8` | [View](variants/v1.20.4-envsubst-alpine-3.8 ) |
-| `:v1.20.4-git-alpine-3.8` | [View](variants/v1.20.4-git-alpine-3.8 ) |
-| `:v1.20.4-jq-alpine-3.8` | [View](variants/v1.20.4-jq-alpine-3.8 ) |
-| `:v1.20.4-kustomize-alpine-3.8` | [View](variants/v1.20.4-kustomize-alpine-3.8 ) |
-| `:v1.20.4-ssh-alpine-3.8` | [View](variants/v1.20.4-ssh-alpine-3.8 ) |
 | `:v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
 | `:v1.19.7-alpine-3.8` | [View](variants/v1.19.7-alpine-3.8 ) |
-| `:v1.19.7-envsubst-alpine-3.8` | [View](variants/v1.19.7-envsubst-alpine-3.8 ) |
-| `:v1.19.7-git-alpine-3.8` | [View](variants/v1.19.7-git-alpine-3.8 ) |
-| `:v1.19.7-jq-alpine-3.8` | [View](variants/v1.19.7-jq-alpine-3.8 ) |
-| `:v1.19.7-kustomize-alpine-3.8` | [View](variants/v1.19.7-kustomize-alpine-3.8 ) |
-| `:v1.19.7-ssh-alpine-3.8` | [View](variants/v1.19.7-ssh-alpine-3.8 ) |
 | `:v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
 | `:v1.18.15-alpine-3.8` | [View](variants/v1.18.15-alpine-3.8 ) |
-| `:v1.18.15-envsubst-alpine-3.8` | [View](variants/v1.18.15-envsubst-alpine-3.8 ) |
-| `:v1.18.15-git-alpine-3.8` | [View](variants/v1.18.15-git-alpine-3.8 ) |
-| `:v1.18.15-jq-alpine-3.8` | [View](variants/v1.18.15-jq-alpine-3.8 ) |
-| `:v1.18.15-kustomize-alpine-3.8` | [View](variants/v1.18.15-kustomize-alpine-3.8 ) |
-| `:v1.18.15-ssh-alpine-3.8` | [View](variants/v1.18.15-ssh-alpine-3.8 ) |
 | `:v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
 | `:v1.17.17-alpine-3.8` | [View](variants/v1.17.17-alpine-3.8 ) |
-| `:v1.17.17-envsubst-alpine-3.8` | [View](variants/v1.17.17-envsubst-alpine-3.8 ) |
-| `:v1.17.17-git-alpine-3.8` | [View](variants/v1.17.17-git-alpine-3.8 ) |
-| `:v1.17.17-jq-alpine-3.8` | [View](variants/v1.17.17-jq-alpine-3.8 ) |
-| `:v1.17.17-kustomize-alpine-3.8` | [View](variants/v1.17.17-kustomize-alpine-3.8 ) |
-| `:v1.17.17-ssh-alpine-3.8` | [View](variants/v1.17.17-ssh-alpine-3.8 ) |
 | `:v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
 | `:v1.16.15-alpine-3.8` | [View](variants/v1.16.15-alpine-3.8 ) |
-| `:v1.16.15-envsubst-alpine-3.8` | [View](variants/v1.16.15-envsubst-alpine-3.8 ) |
-| `:v1.16.15-git-alpine-3.8` | [View](variants/v1.16.15-git-alpine-3.8 ) |
-| `:v1.16.15-jq-alpine-3.8` | [View](variants/v1.16.15-jq-alpine-3.8 ) |
-| `:v1.16.15-kustomize-alpine-3.8` | [View](variants/v1.16.15-kustomize-alpine-3.8 ) |
-| `:v1.16.15-ssh-alpine-3.8` | [View](variants/v1.16.15-ssh-alpine-3.8 ) |
 | `:v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
 | `:v1.15.12-alpine-3.8` | [View](variants/v1.15.12-alpine-3.8 ) |
-| `:v1.15.12-envsubst-alpine-3.8` | [View](variants/v1.15.12-envsubst-alpine-3.8 ) |
-| `:v1.15.12-git-alpine-3.8` | [View](variants/v1.15.12-git-alpine-3.8 ) |
-| `:v1.15.12-jq-alpine-3.8` | [View](variants/v1.15.12-jq-alpine-3.8 ) |
-| `:v1.15.12-kustomize-alpine-3.8` | [View](variants/v1.15.12-kustomize-alpine-3.8 ) |
-| `:v1.15.12-ssh-alpine-3.8` | [View](variants/v1.15.12-ssh-alpine-3.8 ) |
 | `:v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
 | `:v1.14.10-alpine-3.8` | [View](variants/v1.14.10-alpine-3.8 ) |
-| `:v1.14.10-envsubst-alpine-3.8` | [View](variants/v1.14.10-envsubst-alpine-3.8 ) |
-| `:v1.14.10-git-alpine-3.8` | [View](variants/v1.14.10-git-alpine-3.8 ) |
-| `:v1.14.10-jq-alpine-3.8` | [View](variants/v1.14.10-jq-alpine-3.8 ) |
-| `:v1.14.10-kustomize-alpine-3.8` | [View](variants/v1.14.10-kustomize-alpine-3.8 ) |
-| `:v1.14.10-ssh-alpine-3.8` | [View](variants/v1.14.10-ssh-alpine-3.8 ) |
 | `:v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8` | [View](variants/v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8 ) |
 
diff --git a/generate/definitions/FILES.ps1 b/generate/definitions/FILES.ps1
index cd946c2..fc70558 100755
--- a/generate/definitions/FILES.ps1
+++ b/generate/definitions/FILES.ps1
@@ -1,7 +1,7 @@
 # Files' definition
 $FILES = @(
     '.github/workflows/ci-master-pr.yml'
-    '.github/workflows/ci-release.yml'
+    # '.github/workflows/ci-release.yml'
     '.github/release-drafter.yml'
     # '.gitlab-ci.yml'
     'README.md'
diff --git a/generate/definitions/VARIANTS.ps1 b/generate/definitions/VARIANTS.ps1
index 5981e7a..68d007c 100755
--- a/generate/definitions/VARIANTS.ps1
+++ b/generate/definitions/VARIANTS.ps1
@@ -1,4 +1,5 @@
 $local:VARIANTS_PACKAGE_VERSIONS = @(
+    'v1.22.0'
     'v1.21.0'
     'v1.20.4'
     'v1.19.7'
@@ -17,11 +18,6 @@ $local:VARIANTS_MATRIX = @(
             distro_version = '3.8'
             subvariants = @(
                 @{ components = @(); tag_as_latest = if ($v -eq ($local:VARIANTS_PACKAGE_VERSIONS | ? { $_ -match '^v\d+\.\d+\.\d+$' } | Select-Object -First 1 )) { $true } else { $false } }
-                @{ components = @( 'envsubst' ) }
-                @{ components = @( 'git' ) }
-                @{ components = @( 'jq' ) }
-                @{ components = @( 'kustomize' ) }
-                @{ components = @( 'ssh' ) }
                 @{ components = @( 'envsubst', 'git', 'jq', 'kustomize', 'ssh' ) }
             )
         }
diff --git a/generate/templates/.github/workflows/ci-master-pr.yml.ps1 b/generate/templates/.github/workflows/ci-master-pr.yml.ps1
index 36c9c60..d9e365d 100644
--- a/generate/templates/.github/workflows/ci-master-pr.yml.ps1
+++ b/generate/templates/.github/workflows/ci-master-pr.yml.ps1
@@ -5,10 +5,10 @@ on:
   push:
     branches:
     - master
+    - release # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
   pull_request:
     branches:
     - master
-
 jobs:
 '@
 
@@ -16,8 +16,9 @@ $local:WORKFLOW_JOB_NAMES = $VARIANTS | % { "build-$( $_['tag'].Replace('.', '-'
 $( $VARIANTS | % {
 @"
 
+
   build-$( $_['tag'].Replace('.', '-') ):
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     env:
       VARIANT_TAG: $( $_['tag'] )
       # VARIANT_TAG_WITH_REF: $( $_['tag'] )-`${GITHUB_REF}
@@ -26,7 +27,9 @@ $( $VARIANTS | % {
 @'
 
     steps:
-    - uses: actions/checkout@v1
+    - name: Checkout
+      uses: actions/checkout@v2
+
     - name: Display system info (linux)
       run: |
         set -e
@@ -39,42 +42,149 @@ $( $VARIANTS | % {
         pwd
         docker info
         docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
+
+    # See: https://github.com/docker/build-push-action/blob/v2.6.1/docs/advanced/cache.md#github-cache
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Cache Docker layers
+      uses: actions/cache@v2
+      with:
+        path: /tmp/.buildx-cache
+        key: ${{ runner.os }}-buildx-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-buildx-
+
+    - name: Prepare
+      id: prep
       env:
         DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
       run: |
         set -e
 
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
+        # Get 'namespace' and 'project-name' from 'namespace/project-name'
+        # CI_PROJECT_NAMESPACE=$( echo "${{ github.repository }}" | cut -d '/' -f 1 )
+        # CI_PROJECT_NAME=$( echo "${{ github.repository }}" | cut -d '/' -f 2 )
 
         # Get 'ref-name' from 'refs/heads/ref-name'
         REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
         SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
 
-        # Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
+        # For Generate-DockerImageVariants: Generate the final tags. E.g. 'master-v1.0.0-alpine' and 'master-b29758a-v1.0.0-alpine'
         VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
         VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
 
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
+        # Set step output(s)
+        # echo "::set-output name=CI_PROJECT_NAMESPACE::$CI_PROJECT_NAMESPACE"
+        # echo "::set-output name=CI_PROJECT_NAME::$CI_PROJECT_NAME"
+        # echo "::set-output name=REF::$REF"
+        # echo "::set-output name=SHA_SHORT::$SHA_SHORT"
+        # echo "::set-output name=REF_AND_SHA_SHORT::$REF_AND_SHA_SHORT"
+
+        # For Generate-DockerImageVariants: Set step output(s)
+        echo "::set-output name=CONTEXT::$VARIANT_BUILD_DIR"
+        echo "::set-output name=VARIANT_TAG::$VARIANT_TAG"
+        echo "::set-output name=VARIANT_TAG_WITH_REF::$VARIANT_TAG_WITH_REF"
+        echo "::set-output name=VARIANT_TAG_WITH_REF_AND_SHA_SHORT::$VARIANT_TAG_WITH_REF_AND_SHA_SHORT"
+
+    - name: Login to docker registry
+      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
+      env:
+        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
+        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
+
+    - name: Build (PRs)
+      id: docker_build_pr
+      # Run only on pull requests
+      if: github.event_name == 'pull_request'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: false
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (master)
+      id: docker_build_master
+      # Run only on master
+      if: github.ref == 'refs/heads/master'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: Build and push (release)
+      id: docker_build_release
+      # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+      # if: startsWith(github.ref, 'refs/tags/')
+      if: github.ref == 'refs/heads/release'
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ steps.prep.outputs.CONTEXT }}
+        platforms: linux/386,linux/amd64,linux/arm,linux/arm64,linux/s390x
+        push: true
+        tags: |
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF }}
+          ${{ github.repository }}:${{ steps.prep.outputs.VARIANT_TAG_WITH_REF_AND_SHA_SHORT }}
+
+'@
+
+if ( $_['tag_as_latest'] ) {
+@'
+          ${{ github.repository }}:latest
+
+'@
+}
+@'
+        cache-from: type=local,src=/tmp/.buildx-cache
+        cache-to: type=local,dest=/tmp/.buildx-cache
+
+    - name: List docker images
+      run: docker images
+
     - name: Clean-up
       run: docker logout
       if: always()
 '@
 })
 
+@"
+
+
+  # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+  converge-master-and-release-branches:
+    needs: [$( $local:WORKFLOW_JOB_NAMES -join ', ' )]
+    if: github.ref == 'refs/heads/release'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Merge release into master (fast-forward)
+        run: |
+          git checkout master
+          git merge release
+          git push origin master
+"@
+
 @'
 
+
+  # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
   resolve-release-tag:
     runs-on: ubuntu-latest
     outputs:
@@ -113,6 +223,7 @@ $( $VARIANTS | % {
 
 @"
 
+
   update-draft-release:
     needs: [$( $local:WORKFLOW_JOB_NAMES -join ', ' ), resolve-release-tag]
 "@
@@ -135,5 +246,30 @@ $( $VARIANTS | % {
           tag: ${{ needs.resolve-release-tag.outputs.TAG }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+'@
+
+@"
+
+
+  publish-draft-release:
+    needs: [$( $local:WORKFLOW_JOB_NAMES -join ', ' ), converge-master-and-release-branches]
+"@
+@'
+
+    # For Generate-DockerImageVariants: For CalVer releases. Each push to 'release' branch is a time-based release.
+    # if: startsWith(github.ref, 'refs/tags/')
+    if: github.ref == 'refs/heads/release'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      # Drafts your next Release notes as Pull Requests are merged into "master"
+      - uses: release-drafter/release-drafter@v5
+        with:
+          config-name: release-drafter.yml
+          publish: true
+          name: ${{ needs.resolve-release-tag.outputs.TAG }}
+          tag: ${{ needs.resolve-release-tag.outputs.TAG }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
 '@
diff --git a/generate/templates/.github/workflows/ci-release.yml.ps1 b/generate/templates/.github/workflows/ci-release.yml.ps1
deleted file mode 100644
index f3e9881..0000000
--- a/generate/templates/.github/workflows/ci-release.yml.ps1
+++ /dev/null
@@ -1,168 +0,0 @@
-@'
-name: ci-release
-
-on:
-  push:
-    branches:
-    - release
-
-jobs:
-'@
-
-$local:WORKFLOW_JOB_NAMES = $VARIANTS | % { "build-$( $_['tag'].Replace('.', '-') )" }
-$( $VARIANTS | % {
-@"
-
-  build-$( $_['tag'].Replace('.', '-') ):
-    runs-on: ubuntu-18.04
-    env:
-      VARIANT_TAG: $( $_['tag'] )
-      # VARIANT_TAG_WITH_REF: $( $_['tag'] )-`${GITHUB_REF}
-      VARIANT_BUILD_DIR: $( $_['build_dir_rel'] )
-"@
-@'
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: Display system info (linux)
-      run: |
-        set -e
-        hostname
-        whoami
-        cat /etc/*release
-        lscpu
-        free
-        df -h
-        pwd
-        docker info
-        docker version
-    - name: Login to docker registry
-      run: echo "${DOCKERHUB_REGISTRY_PASSWORD}" | docker login -u "${DOCKERHUB_REGISTRY_USER}" --password-stdin
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-        DOCKERHUB_REGISTRY_PASSWORD: ${{ secrets.DOCKERHUB_REGISTRY_PASSWORD }}
-    - name: Build and push image
-      env:
-        DOCKERHUB_REGISTRY_USER: ${{ secrets.DOCKERHUB_REGISTRY_USER }}
-      run: |
-        set -e
-
-        # Get 'project-name' from 'namespace/project-name'
-        CI_PROJECT_NAME=$( echo "${GITHUB_REPOSITORY}" | rev | cut -d '/' -f 1 | rev )
-
-        # Get 'ref-name' from 'refs/heads/ref-name'
-        REF=$( echo "${GITHUB_REF}" | rev | cut -d '/' -f 1 | rev )
-        SHA_SHORT=$( echo "${GITHUB_SHA}" | cut -c1-7 )
-
-        # Generate the final tags. E.g. 'release-v1.0.0-alpine' and 'release-b29758a-v1.0.0-alpine'
-        VARIANT_TAG_WITH_REF="${REF}-${VARIANT_TAG}"
-        VARIANT_TAG_WITH_REF_AND_SHA_SHORT="${REF}-${SHA_SHORT}-${VARIANT_TAG}"
-
-        docker build \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}" \
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}" \
-
-'@
-if ( $_['tag_as_latest'] ) {
-@'
-          -t "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:latest" \
-
-'@
-}
-@'
-          "${VARIANT_BUILD_DIR}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF}"
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${VARIANT_TAG_WITH_REF_AND_SHA_SHORT}"
-
-'@
-if ( $_['tag_as_latest'] ) {
-@'
-        docker push "${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:latest"
-
-'@
-}
-@'
-    - name: Clean-up
-      run: docker logout
-      if: always()
-'@
-})
-
-@"
-
-  converge-master-and-release-branches:
-    needs: [$( $local:WORKFLOW_JOB_NAMES -join ', ' )]
-    if: github.ref == 'refs/heads/release'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - name: Merge release into master (fast-forward)
-        run: |
-          git checkout master
-          git merge release
-          git push origin master
-"@
-
-@'
-
-  resolve-release-tag:
-    runs-on: ubuntu-latest
-    outputs:
-      TAG: ${{ steps.resolve-release-tag.outputs.TAG }}
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - name: Resolve release tag
-        id: resolve-release-tag
-        run: |
-          set +e
-          # E.g. 20210402
-          TODAYS_DATE=$( date -u '+%Y%m%d' )
-          # Is this the first tag for this date?
-          TODAYS_DATE_TAGS=$( git tag --list | grep "^$TODAYS_DATE" )
-          TAG=
-          if [ -z "$TODAYS_DATE_TAGS" ]; then
-              # E.g. 20210402.0.0
-              TAG="$TODAYS_DATE.0.0" # Send this to stdout
-          else
-              # E.g. if there are 20210402.0.0, 20210402.0.1, 20210402.0.2, this returns 2
-              VERSION_MINOR_LATEST=$( echo "$TODAYS_DATE_TAGS" | cut -d '.' -f 3 | sort -nr | head -n1 )
-              # Minor version
-              VERSION_MINOR=$( expr "$VERSION_MINOR_LATEST" + 1 )
-              # E.g. 20210402.0.3
-              TAG="$TODAYS_DATE.0.$VERSION_MINOR"  # Send this to stdout
-          fi
-          echo "TODAYS_DATE: $TODAYS_DATE"
-          echo "TODAYS_DATE_TAGS: $TODAYS_DATE_TAGS"
-          echo "TAG: $TAG"
-          echo "::set-output name=TAG::$TAG"
-      - name: Print outputs
-        run: echo ${{ steps.resolve-release-tag.outputs.TAG }}
-'@
-
-@"
-
-  publish-draft-release:
-    needs: [$( $local:WORKFLOW_JOB_NAMES -join ', ' ), converge-master-and-release-branches]
-"@
-@'
-
-    if: github.ref == 'refs/heads/release'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      # Drafts your next Release notes as Pull Requests are merged into "master"
-      - uses: release-drafter/release-drafter@v5
-        with:
-          config-name: release-drafter.yml
-          publish: true
-          name: ${{ needs.resolve-release-tag.outputs.TAG }}
-          tag: ${{ needs.resolve-release-tag.outputs.TAG }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-'@
diff --git a/generate/templates/Dockerfile.header.ps1 b/generate/templates/Dockerfile.header.ps1
index 41fd8c6..e2fcb59 100755
--- a/generate/templates/Dockerfile.header.ps1
+++ b/generate/templates/Dockerfile.header.ps1
@@ -1,8 +1,12 @@
 @"
 FROM $( $VARIANT['_metadata']['distro'] ):$( $VARIANT['_metadata']['distro_version'] )
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on `$BUILDPLATFORM, building for `$TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/$( $VARIANT['_metadata']['package_version'] )/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/$( $VARIANT['_metadata']['package_version'] )/bin/`$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 "@
diff --git a/variants/v1.14.10-alpine-3.8/Dockerfile b/variants/v1.14.10-alpine-3.8/Dockerfile
index dd927bc..79337c7 100644
--- a/variants/v1.14.10-alpine-3.8/Dockerfile
+++ b/variants/v1.14.10-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.14.10/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.14.10/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
index 9249b7b..50ac95a 100644
--- a/variants/v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
+++ b/variants/v1.14.10-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.14.10/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.14.10/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.15.12-alpine-3.8/Dockerfile b/variants/v1.15.12-alpine-3.8/Dockerfile
index 9e78092..bb79825 100644
--- a/variants/v1.15.12-alpine-3.8/Dockerfile
+++ b/variants/v1.15.12-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.15.12/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.15.12/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
index a5fbcf9..9085de1 100644
--- a/variants/v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
+++ b/variants/v1.15.12-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.15.12/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.15.12/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.16.15-alpine-3.8/Dockerfile b/variants/v1.16.15-alpine-3.8/Dockerfile
index d1c2ab9..45b10c3 100644
--- a/variants/v1.16.15-alpine-3.8/Dockerfile
+++ b/variants/v1.16.15-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.16.15/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.16.15/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
index 3ddd847..6389684 100644
--- a/variants/v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
+++ b/variants/v1.16.15-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.16.15/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.16.15/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.17.17-alpine-3.8/Dockerfile b/variants/v1.17.17-alpine-3.8/Dockerfile
index fae5137..313aaec 100644
--- a/variants/v1.17.17-alpine-3.8/Dockerfile
+++ b/variants/v1.17.17-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.17.17/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.17.17/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
index 0498e8d..a0a3d05 100644
--- a/variants/v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
+++ b/variants/v1.17.17-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.17.17/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.17.17/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.18.15-alpine-3.8/Dockerfile b/variants/v1.18.15-alpine-3.8/Dockerfile
index 600d80c..f68ed7f 100644
--- a/variants/v1.18.15-alpine-3.8/Dockerfile
+++ b/variants/v1.18.15-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.18.15/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.18.15/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
index 7196a54..b104be1 100644
--- a/variants/v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
+++ b/variants/v1.18.15-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.18.15/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.18.15/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.19.7-alpine-3.8/Dockerfile b/variants/v1.19.7-alpine-3.8/Dockerfile
index 28c9435..e0a085e 100644
--- a/variants/v1.19.7-alpine-3.8/Dockerfile
+++ b/variants/v1.19.7-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.19.7/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.19.7/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
index 08f686d..2cceee7 100644
--- a/variants/v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
+++ b/variants/v1.19.7-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.19.7/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.19.7/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.20.4-alpine-3.8/Dockerfile b/variants/v1.20.4-alpine-3.8/Dockerfile
index f1a3cc9..e976cc5 100644
--- a/variants/v1.20.4-alpine-3.8/Dockerfile
+++ b/variants/v1.20.4-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.20.4/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.20.4/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
index a8d6a4c..bb8a8d2 100644
--- a/variants/v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
+++ b/variants/v1.20.4-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.20.4/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.20.4/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.21.0-alpine-3.8/Dockerfile b/variants/v1.21.0-alpine-3.8/Dockerfile
index c519e4d..e4eb1ab 100644
--- a/variants/v1.21.0-alpine-3.8/Dockerfile
+++ b/variants/v1.21.0-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.21.0/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.21.0/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
index 116f54d..69cb33b 100644
--- a/variants/v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
+++ b/variants/v1.21.0-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -1,7 +1,11 @@
 FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
+# kubectl
 RUN apk add --no-cache curl \
-    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.21.0/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.21.0/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
     && chmod +x /usr/local/bin/kubectl \
     && apk del curl
 
diff --git a/variants/v1.22.0-alpine-3.8/Dockerfile b/variants/v1.22.0-alpine-3.8/Dockerfile
new file mode 100644
index 0000000..bae1510
--- /dev/null
+++ b/variants/v1.22.0-alpine-3.8/Dockerfile
@@ -0,0 +1,14 @@
+FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
+
+# kubectl
+RUN apk add --no-cache curl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.22.0/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
+    && chmod +x /usr/local/bin/kubectl \
+    && apk del curl
+
+
+
+ENTRYPOINT [ "/usr/local/bin/kubectl" ]
\ No newline at end of file
diff --git a/variants/v1.22.0-envsubst-alpine-3.8/Dockerfile b/variants/v1.22.0-envsubst-alpine-3.8/Dockerfile
new file mode 100644
index 0000000..5c21024
--- /dev/null
+++ b/variants/v1.22.0-envsubst-alpine-3.8/Dockerfile
@@ -0,0 +1,29 @@
+FROM alpine:3.8
+
+RUN apk add --no-cache curl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.22.0/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && chmod +x /usr/local/bin/kubectl \
+    && apk del curl
+
+# From: https://github.com/nginxinc/docker-nginx/blob/1.17.0/stable/alpine/Dockerfile
+# Bring in gettext so we can get `envsubst`, then throw
+# the rest away. To do this, we need to install `gettext`
+# then move `envsubst` out of the way so `gettext` can
+# be deleted completely, then move `envsubst` back.
+RUN apk add --no-cache --virtual .gettext gettext \
+    && mv /usr/bin/envsubst /tmp/ \
+    \
+    && runDeps="$( \
+        scanelf --needed --nobanner /tmp/envsubst \
+            | awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
+            | sort -u \
+            | xargs -r apk info --installed \
+            | sort -u \
+    )" \
+    && apk add --no-cache $runDeps \
+    && apk del .gettext \
+    && mv /tmp/envsubst /usr/local/bin/
+
+
+
+ENTRYPOINT [ "/usr/local/bin/kubectl" ]
\ No newline at end of file
diff --git a/variants/v1.22.0-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile b/variants/v1.22.0-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
new file mode 100644
index 0000000..214ab14
--- /dev/null
+++ b/variants/v1.22.0-envsubst-git-jq-kustomize-ssh-alpine-3.8/Dockerfile
@@ -0,0 +1,44 @@
+FROM alpine:3.8
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM"
+
+# kubectl
+RUN apk add --no-cache curl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.22.0/bin/$TARGETPLATFORM/kubectl -o /usr/local/bin/kubectl \
+    && chmod +x /usr/local/bin/kubectl \
+    && apk del curl
+
+# From: https://github.com/nginxinc/docker-nginx/blob/1.17.0/stable/alpine/Dockerfile
+# Bring in gettext so we can get `envsubst`, then throw
+# the rest away. To do this, we need to install `gettext`
+# then move `envsubst` out of the way so `gettext` can
+# be deleted completely, then move `envsubst` back.
+RUN apk add --no-cache --virtual .gettext gettext \
+    && mv /usr/bin/envsubst /tmp/ \
+    \
+    && runDeps="$( \
+        scanelf --needed --nobanner /tmp/envsubst \
+            | awk '{ gsub(/,/, "\nso:", $2); print "so:" $2 }' \
+            | sort -u \
+            | xargs -r apk info --installed \
+            | sort -u \
+    )" \
+    && apk add --no-cache $runDeps \
+    && apk del .gettext \
+    && mv /tmp/envsubst /usr/local/bin/
+
+RUN apk add --no-cache git
+
+RUN apk add --no-cache jq
+
+RUN apk add --no-cache curl \
+    && curl -L https://github.com/kubernetes-sigs/kustomize/releases/download/v2.0.3/kustomize_2.0.3_linux_amd64 -o /usr/local/bin/kustomize \
+    && chmod +x /usr/local/bin/kustomize \
+    && apk del curl
+
+RUN apk add --no-cache openssh-client
+
+
+
+ENTRYPOINT [ "/usr/local/bin/kubectl" ]
\ No newline at end of file
diff --git a/variants/v1.22.0-git-alpine-3.8/Dockerfile b/variants/v1.22.0-git-alpine-3.8/Dockerfile
new file mode 100644
index 0000000..7010671
--- /dev/null
+++ b/variants/v1.22.0-git-alpine-3.8/Dockerfile
@@ -0,0 +1,12 @@
+FROM alpine:3.8
+
+RUN apk add --no-cache curl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.22.0/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && chmod +x /usr/local/bin/kubectl \
+    && apk del curl
+
+RUN apk add --no-cache git
+
+
+
+ENTRYPOINT [ "/usr/local/bin/kubectl" ]
\ No newline at end of file
diff --git a/variants/v1.22.0-jq-alpine-3.8/Dockerfile b/variants/v1.22.0-jq-alpine-3.8/Dockerfile
new file mode 100644
index 0000000..8ec5f9f
--- /dev/null
+++ b/variants/v1.22.0-jq-alpine-3.8/Dockerfile
@@ -0,0 +1,12 @@
+FROM alpine:3.8
+
+RUN apk add --no-cache curl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.22.0/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && chmod +x /usr/local/bin/kubectl \
+    && apk del curl
+
+RUN apk add --no-cache jq
+
+
+
+ENTRYPOINT [ "/usr/local/bin/kubectl" ]
\ No newline at end of file
diff --git a/variants/v1.22.0-kustomize-alpine-3.8/Dockerfile b/variants/v1.22.0-kustomize-alpine-3.8/Dockerfile
new file mode 100644
index 0000000..37b66e9
--- /dev/null
+++ b/variants/v1.22.0-kustomize-alpine-3.8/Dockerfile
@@ -0,0 +1,15 @@
+FROM alpine:3.8
+
+RUN apk add --no-cache curl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.22.0/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && chmod +x /usr/local/bin/kubectl \
+    && apk del curl
+
+RUN apk add --no-cache curl \
+    && curl -L https://github.com/kubernetes-sigs/kustomize/releases/download/v2.0.3/kustomize_2.0.3_linux_amd64 -o /usr/local/bin/kustomize \
+    && chmod +x /usr/local/bin/kustomize \
+    && apk del curl
+
+
+
+ENTRYPOINT [ "/usr/local/bin/kubectl" ]
\ No newline at end of file
diff --git a/variants/v1.22.0-ssh-alpine-3.8/Dockerfile b/variants/v1.22.0-ssh-alpine-3.8/Dockerfile
new file mode 100644
index 0000000..bd86ab5
--- /dev/null
+++ b/variants/v1.22.0-ssh-alpine-3.8/Dockerfile
@@ -0,0 +1,12 @@
+FROM alpine:3.8
+
+RUN apk add --no-cache curl \
+    && curl -L https://storage.googleapis.com/kubernetes-release/release/v1.22.0/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+    && chmod +x /usr/local/bin/kubectl \
+    && apk del curl
+
+RUN apk add --no-cache openssh-client
+
+
+
+ENTRYPOINT [ "/usr/local/bin/kubectl" ]
\ No newline at end of file