sync-readme.yml

name: Sync README to gh-pages

on:
  push:
    branches:
      - master
    paths:
      - README.md
  workflow_dispatch:

permissions:
  contents: write

jobs:
  sync:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout master
        uses: actions/checkout@v4
        with:
          ref: master
          fetch-depth: 0

      - name: Save README from master
        run: cp README.md /tmp/README.md

      - name: Checkout gh-pages
        run: |
          git fetch origin gh-pages
          git checkout gh-pages

      - name: Replace README
        run: |
          cp /tmp/README.md README.md

      - name: Commit if changed
        run: |
          git config user.name "github-actions"
          git config user.email "github-actions@github.com"

          if git diff --quiet README.md; then
            echo "No changes to commit"
            exit 0
          fi

          git add README.md
          git commit -m "Sync README from master"
          git push origin gh-pages