test-build-publish.yml

---
name: Test, Build and Publish docker image
run-name: Docker Build for ${{ github.actor }} on branch ${{ github.ref_name }}

concurrency:
  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
  cancel-in-progress: true

on: 
  push:
    branches:
      - master
      - main
      - test/*
    paths-ignore:
      - 'docs/**'
      - 'requirements.docs.txt'
      - 'mkdocs.yml'
      - 'CNAME'

  release:
    types: [created]

  pull_request:
    paths-ignore:
      - 'docs/**'
      - 'requirements.docs.txt'
      - 'mkdocs.yml'
      - 'CNAME'

jobs:
  lint:
    name: linter
    runs-on: ubuntu-latest
    if: success() || failure()  # Continue running if other jobs fail
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v4
        with:
          python-version: '3.9'
      - uses: psf/black@main
  
  test:
    name: python ${{ matrix.python-version }} tests
    runs-on: ubuntu-latest
    if: success() || failure()   # Continue running if other jobs fail
    strategy:
      matrix:
        python-version: [3.8, 3.9]

    steps:
      - name: Checkout kapitan recursively
        uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v4
        with:
          cache: 'pip'
          python-version: ${{ matrix.python-version }}
      
      - name: Install testing dependencies
        run: |
          sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 762E3157
          sudo apt-get -qq update
          sudo apt-get install -y gnupg2 git curl
          curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3
          chmod 700 get_helm.sh
          sudo ./get_helm.sh
          pip3 install --editable ".[test]"
          pip3 install coverage black
      - name: Run tests
        run: |-
          make test && make test_coverage

  build:
    name: build ${{ matrix.platform }} image
    if: success() || failure()   # Continue running if other jobs fail
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
          - linux/arm64
    steps:
      - name: Checkout kapitan recursively
        uses: actions/checkout@v4
        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

      # Builds docker image and allow scoped caching
      - name: build Kapitan Image
        uses: docker/build-push-action@v4
        with:
          push: False 
          platforms: ${{ matrix.platform }}
          load: True
          file: Dockerfile
          tags: local-test-${{ matrix.platform }}
          cache-from: type=gha,scope=$GITHUB_REF_NAME-${{ matrix.platform }}
          cache-to: type=gha,mode=max,scope=$GITHUB_REF_NAME-${{ matrix.platform }}

      - name: Test Kapitan for ${{ matrix.platform }}
        run: |
          docker run -t --rm local-test-${{ matrix.platform }} --version

  publish:
    name: publish platform images
    # Only starts if everything else is successful
    needs: [lint, test, build]
    if: github.event_name != 'pull_request'
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
          - linux/arm64
    steps:
      - name: Checkout kapitan recursively
        uses: actions/checkout@v4
        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: Login to DockerHub
        uses: docker/login-action@v2
        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: ${{ secrets.DOCKERHUB_USERNAME}}
        with:
          # list of Docker images to use as base name for tags
          images: |
            name=${{ env.DOCKERHUB_USERNAME }}/kapitan
          # generate Docker tags based on the following events/attributes
          tags: |
            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
          flavor: |
            suffix=-${{ matrix.platform }}

      - name: Build and push by digest
        id: push-digest
        env:
          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME}}
        if: env.DOCKERHUB_USERNAME != null
        uses: docker/build-push-action@v4
        with:
          platforms: ${{ matrix.platform }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{steps.meta.output.labels}}
          cache-from: type=gha,scope=$GITHUB_REF_NAME-${{ matrix.platform }}
          cache-to: type=gha,mode=max,scope=$GITHUB_REF_NAME-${{ matrix.platform }}

  build-multi-architecture:
    name: combine platform images
    needs:
      - publish
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      # 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: Login to DockerHub
        uses: docker/login-action@v2
        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: ${{ secrets.DOCKERHUB_USERNAME}}
        with:
          # list of Docker images to use as base name for tags
          images: |
            name=${{ env.DOCKERHUB_USERNAME }}/kapitan
          # generate Docker tags based on the following events/attributes
          tags: |
            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            
      - uses: int128/docker-manifest-create-action@v1
        with:
          tags: ${{ steps.meta.outputs.tags }}
          builder: buildx
          suffixes: |
            -linux-amd64
            -linux-arm64