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# https://github.com/marketplace/actions/build-and-push-docker-images
name: OCI Base Image
on:
  schedule:
  - cron: '0 3 * * *'
  workflow_dispatch:
jobs:
  build-publish:
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Set up QEMU
        id: qemu
        uses: docker/setup-qemu-action@v2
        with:
          image: tonistiigi/binfmt:latest
          platforms: linux/amd64,linux/arm64

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Available platforms
        run: echo ${{ steps.buildx.outputs.platforms }}

      - name: Cache Docker layers
        uses: actions/cache@v3.2.1
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-${{ matrix.image_tag_suffix }}-buildx-${{ github.event.pull_request.head.sha || github.sha }}
          restore-keys: |
            ${{ runner.os }}-${{ matrix.image_tag_suffix }}-buildx-

      - name: Check for Push Credentials
        id: authorized
        run: |
          if [ -n "${{ secrets.DOCKERHUB_USERNAME }}" ]; then
            echo "::set-output name=PUSH::true"
          else
            echo "::set-output name=PUSH::false"
          fi

      - name: Login to DockerHub
        if: steps.authorized.outputs.PUSH == 'true'
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: packaging/base-image
          platforms: linux/amd64,linux/arm64
          pull: true
          push: ${{ steps.authorized.outputs.PUSH }}
          tags: |
            pivotalrabbitmq/ubuntu:20.04
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache-new

      # Temp fix
      # https://github.com/docker/build-push-action/issues/252
      # https://github.com/moby/buildkit/issues/1896
      - name: Move cache
        run: |
          rm -rf /tmp/.buildx-cache
          mv /tmp/.buildx-cache-new /tmp/.buildx-cache