ghcr.yml

name: Build and publish Docker image

on:
  workflow_dispatch:
  release:
    types: [published]
  pull_request:
  push:
    branches:
    - development

env:
  REGISTRY_IMAGE: ghcr.io/${{ github.repository }}

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    strategy:
      fail-fast: true
      matrix:
        include:
          - platform: linux/amd64
          - platform: linux/arm64
          - platform: linux/arm/v6
          - platform: linux/arm/v7
          - platform: linux/386
    steps:
      - name: Prepare name for digest up/download
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

      - name: Checkout Code
        uses: actions/checkout@v4.2.2
        with:
          fetch-depth: 0
          ref: ${{ github.head_ref }}

      - name: "Calculate required variables"
        id: variables
        run: |
          GIT_TAG=${{ github.event.release.tag_name }}
          # If GIT_TAG is set then GIT BRANCH should be "main", else get it from the branch name
          GIT_BRANCH=$([ -n "${GIT_TAG}" ] && echo "main" || git rev-parse --abbrev-ref HEAD)
          GIT_VERSION=$(git --no-pager describe --tags --always --abbrev=8 --dirty)
          GIT_COMMIT=$(git --no-pager describe --always --abbrev=8 --dirty)
          GIT_DATE=$(git --no-pager show --date=short --format=%at --name-only | head -n 1)
          echo "GIT_TAG=${GIT_TAG}" >> $GITHUB_ENV
          echo "GIT_BRANCH=${GIT_BRANCH}" >> $GITHUB_ENV
          echo "GIT_VERSION=${GIT_VERSION}" >> $GITHUB_ENV
          echo "GIT_COMMIT=${GIT_COMMIT}" >> $GITHUB_ENV
          echo "GIT_DATE=${GIT_DATE}" >> $GITHUB_ENV

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3.3.0

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3.8.0
        with:
          buildkitd-flags: --debug

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ env.REGISTRY_IMAGE }}
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3.3.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v6.13.0
        id: build
        with:
          context: .
          file: ./Dockerfile
          build-args: |
            GIT_TAG=${{ env.GIT_TAG }}
            GIT_BRANCH=${{ env.GIT_BRANCH }}
            GIT_VERSION=${{ env.GIT_VERSION }}
            GIT_COMMIT=${{ env.GIT_COMMIT }}
            GIT_DATE=${{ env.GIT_DATE }}
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          provenance: false
          outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=${{ github.event.pull_request.head.repo.full_name == github.repository || github.event_name == 'push' || github.event_name == 'release' }}
      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"
      - name: Upload digest
        uses: actions/upload-artifact@v4.6.0
        with:
          name: digests-${{ env.PLATFORM_PAIR }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-latest
    needs:
      - build
    if: |
      github.actor != 'dependabot[bot]'
      && ( github.event.pull_request.head.repo.full_name == github.repository || github.event_name == 'push' || github.event_name == 'release' )
    permissions:
      contents: read
      packages: write
    steps:
      - name: Download digests
        uses: actions/download-artifact@v4.1.8
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3.8.0
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ env.REGISTRY_IMAGE }}
          flavor: latest=${{ startsWith(github.ref, 'refs/tags/') }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha,enable=${{ github.event_name == 'workflow_dispatch' }}
            type=ref,event=pr
            type=ref,event=branch
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3.3.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)
      - name: Inspect image
        run: |
          docker buildx imagetools inspect --raw ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.version }}