docker.yml

# Triggers a Docker workflow on completion of the "build" workflow but
# pushes to DockerHub
#
# Author: Just van den Broecke & Edward Lewis - 2021
#
name: Docker Build

on:
  workflow_run:
    workflows: ["build ⚙️"]
    types: [completed]

jobs:
  # Single job now to build Docker Image and push to DockerHub
  on-success:
    name: Build, Test and Push Docker Image to DockerHub
    runs-on: ubuntu-latest
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    
    # v2 https://github.com/docker/build-push-action/blob/master/UPGRADE.md
    steps:
      - name: Checkout ✅
        uses: actions/checkout@v2

      - name: Prepare 📦
        id: prep
        run: |
          DOCKER_IMAGE=geopython/pycsw
          VERSION=latest
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            VERSION=${GITHUB_REF#refs/tags/}
          elif [[ $GITHUB_REF == refs/heads/* ]]; then
            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
          elif [[ $GITHUB_REF == refs/pull/* ]]; then
            VERSION=pr-${{ github.event.number }}
          fi
          if [[ $VERSION == master ]]; then
            VERSION=latest
          fi
          TAGS="${DOCKER_IMAGE}:${VERSION}"
          echo ::set-output name=image::${DOCKER_IMAGE}
          echo ::set-output name=version::${VERSION}
          echo ::set-output name=tags::${TAGS}
          echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
      - name: Show Image Settings 📦
        run: echo "IMAGE=${{ steps.prep.outputs.image }} VERSION=${{ steps.prep.outputs.version }} TAGS=${{ steps.prep.outputs.tags }}"

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

      - name: Login to DockerHub 📦
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Docker Build only - retain local Image 📦
        uses: docker/build-push-action@v2
        with:
          context: .
          load: true
          push: false
          tags: ${{ steps.prep.outputs.tags }}
          labels: |
            org.opencontainers.image.source=${{ github.event.repository.html_url }}
            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
            org.opencontainers.image.revision=${{ github.sha }}

      - name: Push to Docker repo ☁️
        run: docker push ${{ steps.prep.outputs.image }}:${{ steps.prep.outputs.version }}

  on-failure:
    runs-on: ubuntu-latest
    if: ${{ github.event.workflow_run.conclusion == 'failure' }}
    steps:
      - name: Print Test Fail
        run: echo Tests Failed