docker-publish.yml

name: Docker

on:
  push:
    branches:
      - "master"
  pull_request:
    branches:
      - "master"

env:
  IMAGE_NAME: spark-k8s-deployer

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Build image
        run: docker build . --file Dockerfile --tag $IMAGE_NAME-test

  test-build-args:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Build image
        run: docker build . --file Dockerfile --tag $IMAGE_NAME-test-args --build-arg QEMU_ARCHS="aarch64 arm x86_64"

  deploy:
    needs: [test, test-build-args]
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/master'

    steps:
      - uses: actions/checkout@v3

      # Refs https://github.com/docker/login-action#github-container-registry
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build image
        run: docker build . --file Dockerfile --tag $IMAGE_NAME

      - name: Push image to GitHub Container Registry
        run: |
          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME

          # Change all uppercase to lowercase.
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')

          # Strip git ref prefix from version.
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          # Strip "v" prefix from tag name.
          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')

          # Use Docker `latest` tag convention.
          [ "$VERSION" == "master" ] && VERSION=latest

          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION

          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:$VERSION