docscleanup.yml

name: Documentation Preview Cleanup

on:
  pull_request:
    types: [closed]

jobs:
  doc-preview-cleanup:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout gh-pages branch
        uses: actions/checkout@v2
        with:
          ref: gh-pages

      - name: Delete preview and history
        run: |
            if [ -d "$DIR" ]; then
              git config user.name "Documenter.jl"
              git config user.email "documenter@juliadocs.github.io"
              git rm -rf "$DIR"
              git commit -m "delete preview"
              git branch gh-pages-new $(echo "delete history" | git commit-tree HEAD^{tree})
              git push --force origin gh-pages-new:gh-pages
            fi
        env:
            DIR: "previews/PR${{ github.event.number }}"

# Workflow copied from https://github.com/CliMA/TimeMachine.jl