lightning/.github/workflows/ci-app_block.yml

name: Block app edits

on: ["pull_request"]

jobs:
  block:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: "2"  # To retrieve the preceding commit.

      - name: Get changed files using defaults
        id: changed-files
        uses: tj-actions/changed-files@v23
      - name: List all added files
        run: |
          for file in ${{ steps.changed-files.outputs.all_changed_and_modified_files }}; do
            echo "$file"
          done

      - name: Block edits in docs/source-app
        if: contains(steps.changed-files.outputs.all_changed_and_modified_files, 'docs/source-app')
        run:  exit 1