refactor ci.yaml Action's environment variables

.github/workflows/push.yaml

@@ -7,7 +7,7 @@ on: # yamllint disable-line rule:truthy
     types: [opened, synchronize, reopened, ready_for_review]
 
 env:
-  GO_VERSION: 1.22
+  QUAY_NAMESPACE: ${{ vars.QUAY_NAMESPACE || 'konflux-workspaces' }}
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
@@ -21,9 +21,12 @@ jobs:
       matrix:
         include:
           - directory: server
-            image_base: quay.io/konflux-workspaces/workspaces-server
+            image_base: workspaces-server
           - directory: operator
-            image_base: quay.io/konflux-workspaces/workspaces-operator
+            image_base: workspaces-operator
+
+    env:
+      GO_VERSION: 1.22
 
     steps:
       - name: Checkout Git Repository
@@ -46,14 +49,20 @@ jobs:
           go-version: ${{ env.GO_VERSION }}
           cache: false
 
+      - name: Compute base image
+        id: img
+        run: |
+          IMG="quay.io/${{ env.QUAY_NAMESPACE }}/${{ matrix.image_base }}"
+          echo "base=${IMG}" >> ${GITHUB_OUTPUT}
+
       - name: Build image
         id: tag
         run: |
           if [[ "${GITHUB_EVENT_NAME}" = "pull_request_target" ]]; then
             export PR_SHA=${{ github.event.pull_request.head.sha }}
-            export IMG="${{ matrix.image_base }}:pr-${{ github.event.pull_request.number }}-${PR_SHA:0:8}"
+            export IMG="${{ steps.img.outputs.base }}:pr-${{ github.event.pull_request.number }}-${PR_SHA:0:8}"
           else
-            export IMG="${{ matrix.image_base }}:${GITHUB_SHA:0:8}"
+            export IMG="${{ steps.img.outputs.base }}:${GITHUB_SHA:0:8}"
           fi
           echo "tag=${IMG}" >> ${GITHUB_OUTPUT}
           make -C "${{ matrix.directory }}" docker-build
@@ -73,13 +82,16 @@ jobs:
           password: ${{ secrets.QUAY_TOKEN }}
 
       - name: Push images
-        run: docker push -a ${{ matrix.image_base }}
+        run: docker push -a "${{ steps.img.outputs.base }}"
 
   build-kubesaw:
     name: Build kubesaw components
     runs-on: ubuntu-22.04
     if: ${{ github.event_name == 'pull_request_target' }}
 
+    env:
+      GO_VERSION: 1.20.8
+
     steps:
       - name: Checkout Git Repository
         uses: actions/checkout@v4
@@ -93,7 +105,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.20.8
+          go-version: ${{ env.GO_VERSION }}
           cache: false
 
       - name: Prepare tools
@@ -109,6 +121,7 @@ jobs:
       - name: Build and push images
         env:
           PR_SHA: ${{ github.event.pull_request.head.sha }}
+          IMAGE_BUILDER: docker
         run: |
           export TAG=pr-${{ github.event.pull_request.number }}-${PR_SHA:0:8}
-          IMAGE_BUILDER=docker ci/toolchain_manager.sh "${TAG}"
+          ci/toolchain_manager.sh "${TAG}"