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| name: Create and publish a Docker image | |
| on: | |
| push: | |
| branches: ["**"] # run for any commit or tag push on any branch | |
| tags-ignore: ["v**"] # reserve v* tags for releases | |
| env: | |
| REGISTRY_IMAGE: ghcr.io/lftraining/lfs148-code | |
| jobs: | |
| build: | |
| name: Build and publish docker image for ${{ matrix.image }} on ${{ matrix.platform }} | |
| runs-on: ${{ matrix.os }} | |
| strategy: | |
| fail-fast: false | |
| matrix: | |
| image: | |
| - application | |
| platform: | |
| - linux/amd64 | |
| - linux/arm64 | |
| include: | |
| - image: application | |
| dockerfile: .devcontainer/Dockerfile | |
| context: .devcontainer/ | |
| - platform: linux/arm64 | |
| os: [ubuntu-latest] | |
| - platform: linux/amd64 | |
| os: [ubuntu-latest] | |
| permissions: | |
| contents: read | |
| packages: write | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v4 | |
| - name: Prepare for ${{ matrix.image }} on ${{ matrix.platform }} | |
| run: | | |
| platform=${{ matrix.platform }} | |
| echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV | |
| - name: Extract metadata (tags, labels) for Docker from ${{ matrix.image }} | |
| id: meta | |
| uses: docker/metadata-action@v5 | |
| with: | |
| images: ${{ env.REGISTRY_IMAGE }}-${{ matrix.image }} | |
| tags: | | |
| type=ref,event=branch | |
| type=ref,event=tag | |
| type=ref,event=pr | |
| type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }} | |
| - name: Set up QEMU | |
| uses: docker/setup-qemu-action@v3 | |
| - name: Set up Docker Buildx | |
| id: buildx | |
| uses: docker/setup-buildx-action@v3 | |
| - name: Login to GitHub Container Registry | |
| uses: docker/login-action@v3 | |
| with: | |
| registry: ghcr.io | |
| username: ${{ github.actor }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| - name: Build and push by digest for ${{ matrix.image }} | |
| id: build | |
| uses: docker/build-push-action@v6 | |
| with: | |
| context: ${{ matrix.context }} | |
| file: ${{ matrix.dockerfile }} | |
| platforms: ${{ matrix.platform }} | |
| labels: ${{ steps.meta.outputs.labels }} | |
| outputs: type=image,name=${{ env.REGISTRY_IMAGE }}-${{ matrix.image }},push-by-digest=true,name-canonical=true,push=true | |
| cache-from: type=gha,scope=build-${{ env.PLATFORM_PAIR }} | |
| cache-to: type=gha,scope=build-${{ env.PLATFORM_PAIR }} | |
| - name: Export digest for ${{ matrix.image }} on ${{ matrix.platform }} | |
| run: | | |
| mkdir -p /tmp/digests | |
| digest="${{ steps.build.outputs.digest }}" | |
| touch "/tmp/digests/${digest#sha256:}" | |
| - name: Upload digest | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: digests-${{ matrix.image }}-${{ env.PLATFORM_PAIR }} | |
| path: /tmp/digests/* | |
| if-no-files-found: error | |
| retention-days: 1 | |
| merge: | |
| runs-on: ubuntu-latest | |
| needs: | |
| - build | |
| strategy: | |
| fail-fast: false | |
| matrix: | |
| image: | |
| - application | |
| steps: | |
| - name: Download digests | |
| uses: actions/download-artifact@v4 | |
| with: | |
| path: /tmp/digests | |
| pattern: digests-${{ matrix.image }}* | |
| merge-multiple: true | |
| - name: Set up Docker Buildx | |
| uses: docker/setup-buildx-action@v3 | |
| - name: Docker meta | |
| id: meta | |
| uses: docker/metadata-action@v5 | |
| with: | |
| images: ${{ env.REGISTRY_IMAGE }}-${{ matrix.image }} | |
| tags: | | |
| type=ref,event=branch | |
| type=ref,event=tag | |
| type=ref,event=pr | |
| type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }} | |
| - name: Login to GitHub Container Registry | |
| uses: docker/login-action@v3 | |
| with: | |
| registry: ghcr.io | |
| username: ${{ github.actor }} | |
| 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 }}-${{ matrix.image }}@sha256:%s ' *) | |
| - name: Inspect image | |
| run: | | |
| docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}-${{ matrix.image }}:${{ steps.meta.outputs.version }} |