remove-preview-after-merge.yml

# from https://github.com/CliMA/ClimaTimeSteppers.jl
name: Remove preview once PR is merged or closed

on:
  pull_request:
    types: [closed]

jobs:
  remove-preview-after-merge:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout gh-pages branch
        uses: actions/checkout@v4
        with:
          ref: gh-pages
      - name: Delete preview and history + push changes
        run: |
            if [ -d "previews/PR${{ github.event.number }}" ]; then
              git config user.name "GH workflow"
              git config user.email "email@example.org"
              git rm -rf "previews/PR${{ github.event.number }}"
              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