name: README Edit Protection

on:
  pull_request_target:

jobs:
  check:
    name: 'File check'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 2
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v39
      - name: Check if README included
        run: |
           for file in ${{ steps.changed-files.outputs. modified_files }}; do
              if [[ $file == 'README.md' ]]; then
                 echo "[!] README.md was edited, blocking!"
                 exit 1
              fi
           done