name: "Linter"

on: [pull_request]
jobs:
  tests:
    name: Linter
    runs-on: ubuntu-latest

    steps:
    - name: Checkout repository
      uses: actions/checkout@v2
      with:
        # We must fetch at least the immediate parents so that if this is
        # a pull request then we can checkout the head.
        fetch-depth: 2

    # If this run was triggered by a pull request event, then checkout
    # the head of the pull request instead of the merge commit.
    - run: git checkout HEAD^2
      if: ${{ github.event_name == 'pull_request' }}

    - name: Run Linter
      uses: docker
      run: |
        docker run --rm -v $(pwd):/app -w /app composer sh -c \
        "composer install --profile --ignore-platform-reqs && composer lint"