build_and_publish.yml

name: Docker multiarch publish

on: [push, workflow_dispatch]
env:
  REPOSITORY: bigbluebutton_mock
jobs:
  check-env:
    # We need to check if at least one of the repository is defined
    runs-on: ubuntu-latest
    outputs:
      checks: ${{ steps.checks.outputs.defined }}
    steps:
      - id: checks
        env:
          GH_OWNER: ${{ secrets.GH_OWNER }}
          DOCKERHUB_OWNER: ${{ secrets.DOCKERHUB_OWNER }}
        if: env.GH_OWNER != '' || env.DOCKERHUB_OWNER != ''
        run: echo "defined=true" >> $GITHUB_OUTPUT

  build-docker:
    needs: [check-env]
    # Completely avoid forks to try this workflow.
    runs-on: ubuntu-latest
    env:
      GH_OWNER: ${{ secrets.GH_OWNER }}
      DOCKERHUB_OWNER: ${{ secrets.DOCKERHUB_OWNER }}
    if: needs.check-env.outputs.checks == 'true'
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      # Calculate the tags to be pushed to the registries.
      - name: Calculate image tag names for Dockerhub
        if: env.GH_OWNER != ''
        id: calculatetagsdhub
        uses: docker/metadata-action@v3
        with:
          images: |
            ${{ env.DOCKERHUB_OWNER }}/${{ env.REPOSITORY }}
          tags: |
            type=raw,value=latest
            type=ref,event=tag
      - name: Calculate image tag names for GCR
        if: env.GH_OWNER != ''
        id: calculatetagsgcr
        uses: docker/metadata-action@v4
        with:
          images: |
            ghcr.io/${{ env.GH_OWNER }}/${{ env.REPOSITORY }}
          tags: |
            type=raw,value=latest
            type=ref,event=tag
      # https://github.com/docker/setup-qemu-action#usage
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      # https://github.com/marketplace/actions/docker-setup-buildx
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      # https://github.com/docker/login-action#docker-hub
      - name: Login to Docker Hub
        if: ${{ env.DOCKERHUB_OWNER != '' }}
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      # https://github.com/docker/login-action#github-container-registry
      - name: Login to GitHub Container Registry
        if: env.GH_OWNER != ''
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ env.GH_OWNER }}
          password: ${{ secrets.GITHUB_TOKEN }}


      # https://github.com/docker/build-push-action#multi-platform-image
      - name: Build and push to Docker Hub
        if: env.DOCKERHUB_OWNER != ''
        uses: docker/build-push-action@v3
        with:
          context: .
          file: Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.calculatetagsdhub.outputs.tags }}

      - name: Build and push to Github registries
        if: ${{ env.GH_OWNER != '' }}
        uses: docker/build-push-action@v3
        with:
          context: .
          file: Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.calculatetagsgcr.outputs.tags }}

      # Note that we only update the description with the main branch version.
      - name: Set Docker Hub description from README.md
        if: github.ref == 'refs/heads/main' && env.DOCKERHUB_OWNER != ''
        uses: peter-evans/dockerhub-description@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          repository: ${{ secrets.DOCKERHUB_OWNER }}/${{ env.REPOSITORY }}