ci: only publish containers if tests passed

.github/workflows/test.yml → .github/workflows/main.yml

@@ -1,8 +1,9 @@
-name: Test
+name: Test, Build, Publish
 
 on:
   push:
   pull_request:
+  workflow_dispatch:
 
 jobs:
   test-misc: # quick, simple checks
@@ -85,3 +86,59 @@ jobs:
     - run: ./test/test-images.sh
     - if: always()
       run: docker compose logs
+  build-push-image:
+    if: |
+      github.event_name == 'workflow_dispatch' || (
+        github.event_name == 'push' && (
+          github.ref == 'refs/heads/master' ||
+          startsWith(github.ref, 'refs/tags/v20')
+        )
+      )
+    needs:
+    - test-images
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    strategy:
+      matrix:
+        image: [nginx, service]
+    env:
+      REGISTRY: ghcr.io
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v5
+      with:
+        fetch-depth: 0
+        fetch-tags: true
+        submodules: recursive
+    - name: Log into registry ${{ env.REGISTRY }}
+      uses: docker/login-action@v4
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    - name: Show Docker Context
+      run: ./test/check-docker-context.sh --report
+
+    - name: Extract Docker metadata
+      id: meta
+      uses: docker/metadata-action@v6
+      with:
+        images: ${{ env.REGISTRY }}/${{ github.repository_owner }}/central-${{ matrix.image }}
+
+    - name: Set up QEMU emulator for multi-arch images
+      uses: docker/setup-qemu-action@v4
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v4
+
+    - name: Build and push ${{ matrix.image }} Docker image
+      uses: docker/build-push-action@v7
+      with:
+        file: ${{ matrix.image }}.dockerfile
+        context: .
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+        platforms: 'linux/amd64,linux/arm64'