build.yml

name: build
on:
  push:
    branches: [master]

jobs:
  build:
    name: Build Hugo Site
    runs-on: ubuntu-latest
    steps:
      - name: Install Hugo
        env:
          HUGO_VERSION: 0.74.1
        run: |
          mkdir ~/hugo
          cd ~/hugo
          curl -L "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_${HUGO_VERSION}_Linux-64bit.tar.gz" --output hugo.tar.gz
          tar -xvzf hugo.tar.gz
          sudo mv hugo /usr/local/bin

      - name: Checkout master branch
        uses: actions/checkout@v2
        with:
          ref: master
          path: main
          submodules: true

      - name: Checkout gh-pages branch
        uses: actions/checkout@v2
        with:
          ref: gh-pages
          path: gh-pages

      - name: Hugo Build
        run: cd main && hugo

      - name: Copy files
        run: cp -rf main/public/* gh-pages/

      - name: Commit changes
        run: |
          cd gh-pages

          git config --local user.email "actions@github.com"
          git config --local user.name "GitHub Action"

          git add -A .

          if git diff-index --quiet HEAD --; then
            echo "No changes..."
          else
            git commit -m "[CI] build hugo static site"
            git push
          fi