test-docker-build-multi-platform.yml

name: Test docker multi-platform
on:
#  # Uncomment when test added first time to register workflow and comment it back after workflow would be registered
#  #
#  # Added pull_request to register workflow from the PR.
#  # Read more https://stackoverflow.com/questions/63362126/github-actions-how-to-run-a-workflow-created-on-a-non-master-branch-from-the-wo
#  pull_request: {}
  workflow_dispatch: {}

jobs:
  setup:
    runs-on: ubuntu-latest
    steps:
      - name: Setup
        run: echo "Do setup"

  test:
    runs-on: ubuntu-latest
    needs: [setup]
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - uses: ./
        id: current
        with:
          workdir: ./test/custom
          file: Dockerfile_multi_platform
          organization: ${{ github.event.repository.owner.login }}
          repository: ${{ github.event.repository.name }}
          registry: registry.hub.docker.com
          login: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}
          platforms: linux/amd64,linux/arm64

      - name: Inspect Image
        id: inspect
        run: | 
          json=$(docker buildx imagetools inspect ${{ steps.current.outputs.image }}:${{ steps.current.outputs.tag }} --raw )
          archs=$(echo $json | jq '[.manifests[] | .platform | select(.os != "unknown") | "\(.os)/\(.architecture)"] | join(",")')
          echo "archs=$archs" >> $GITHUB_ENV
      
      
      - uses: nick-fields/assert-action@v1
        with:
          expected: 'registry.hub.docker.com/cloudposse/github-action-docker-build-push'
          actual: ${{ steps.current.outputs.image }}

      - uses: nick-fields/assert-action@v1
        with:
          expected: sha-${{ github.sha }}
          actual: ${{ steps.current.outputs.tag }}

      - uses: nick-fields/assert-action@v1
        with:
          expected: 'linux/amd64'
          actual: ${{ env.archs }}
          comparison: contains

      - uses: nick-fields/assert-action@v1
        with:
          expected: 'linux/arm64'
          actual: ${{ env.archs }}
          comparison: contains

  teardown:
    runs-on: ubuntu-latest
    needs: [test]
    if: ${{ always() }}
    steps:
      - name: Tear down
        run: echo "Do Tear down"