name: Build the Docker images

on:
  # Only trigger the workflow when there is a PR on the master branch
  pull_request:
    branches: [ "master" ]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Set up QEMU (for ARM emulation)
        run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes

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

      - name: Build the Docker images 
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: |
          # Initialize variables
          DOCKER_IMG_TAG=`echo "${{ github.sha }}" | cut -c 1-7`
          DOCKER_USERNAME=${{ secrets.DOCKER_USERNAME }}
          # Login
          echo ${{ secrets.DOCKER_PASSWORD }} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
          # Create the environment
          sed -e '/^[[:space:]]*$/d' -e '/[#@]/d' -e 's/\(^[^=]*\)=\(.*\)/\1="\2"/' template.env > env.hcl
          # Build and Push
          DOCKER_IMG_TAG=$DOCKER_IMG_TAG DOCKER_USERNAME=$DOCKER_USERNAME docker buildx bake -f docker-bake.hcl -f env.hcl