name: Hadolint

on: [
      push,
      pull_request
    ]

jobs:
  hadolint:
    name: Validate Dockerfile syntax
    runs-on: ubuntu-20.04
    timeout-minutes: 30
    steps:
      # Checkout the repo
      - name: Checkout
        uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
      # End Checkout the repo


      # Download hadolint - https://github.com/hadolint/hadolint/releases
      - name: Download hadolint
        shell: bash
        run: |
          sudo curl -L https://github.com/hadolint/hadolint/releases/download/v${HADOLINT_VERSION}/hadolint-$(uname -s)-$(uname -m) -o /usr/local/bin/hadolint && \
          sudo chmod +x /usr/local/bin/hadolint
        env:
          HADOLINT_VERSION: 2.12.0
      # End Download hadolint

      # Test Dockerfiles
      - name: Run hadolint
        shell: bash
        run:  git ls-files --exclude='docker/*/Dockerfile*' --ignored --cached | xargs hadolint
      # End Test Dockerfiles