db-rest/.github/workflows/docker-image.yml

name: build & publish Docker image
on:
  push:
    branches:
      - 6
jobs:
  lint-test:
    name: lint, build & test
    uses: './.github/workflows/lint-test.yml'

  build-and-publish:
    name: build & publish Docker image
    needs: [lint-test]
    runs-on: ubuntu-latest
    steps:
      - name: check out the repo
        uses: actions/checkout@v4
      - name: set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: configure Docker to use buildx
        uses: docker/setup-buildx-action@v3
      - name: log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
      - name: build Docker image & push to Docker Hub
        uses: docker/build-push-action@v4
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: |
            derhuerst/db-rest:6
            derhuerst/db-rest:latest
          # https://docs.docker.com/build/ci/github-actions/examples/#github-cache
          cache-from: type=gha
          cache-to: type=gha,mode=max,oci-mediatypes=true,compression=zstd

      # this is for the public-transport/infrastructure cluster
      - name: log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: determine commit hash
        id: hash
        run: echo "::set-output name=hash::$(echo $GITHUB_SHA | head -c7)"
      - name: determine current date and time
        id: datetime
        run: echo "::set-output name=datetime::$(date -u +'%Y-%m-%dT%H.%M.%SZ')"
      - name: push Docker image to GitHub Registry
        uses: docker/build-push-action@v4
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: |
            ghcr.io/${{github.repository}}:v6
            ghcr.io/${{github.repository}}:v6_${{steps.hash.outputs.hash}}_${{steps.datetime.outputs.datetime}}
          # https://docs.docker.com/build/ci/github-actions/examples/#github-cache
          cache-from: type=gha
          cache-to: type=gha,mode=max,oci-mediatypes=true,compression=zstd