docker-image.yml

---
name: Docker Build and Push
on:
  workflow_run:
    workflows:
      - Python Tests
    types:
      - completed

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout kapitan recursively
        uses: actions/checkout@master
        with:
          submodules: recursive
      
      # Setup QEMU and Buildx to build multi-platform image
      # This was inspired by this example : https://docs.docker.com/build/ci/github-actions/examples/#multi-platform-images
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Build :test image and export to Docker
        uses: docker/build-push-action@v4
        with:
          load: true
          tags: test
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Test Kapitan
        run: |
          docker run --rm test

      - name: Login to DockerHub
        uses: docker/login-action@v1
        env:
          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME}}
        if: env.DOCKERHUB_USERNAME != null
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        env:
          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME}}
        if: env.DOCKERHUB_USERNAME != null
        with:
          # list of Docker images to use as base name for tags
          images: |
            ${{ env.DOCKERHUB_USERNAME }}/kapitan            
          # generate Docker tags based on the following events/attributes
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha       

      - name: Push Kapitan Image
        uses: docker/build-push-action@v4
        with:
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}  # push image only on non-pull_requests
          file: Dockerfile
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max