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 Docker images
        run: |
          docker-compose --env-file template.env build --parallel