build-site.yaml

name: build-site
run-name: build live site

on:
  # run when called from another workflow
  workflow_call:

  # run if user manually requests it
  workflow_dispatch:

# variables
env:
  PREVIEWS_FOLDER: preview

permissions:
  contents: write

jobs:
  build-site:
    runs-on: ubuntu-latest

    steps:
      # for debugging
      - name: Print contexts
        uses: crazy-max/ghaction-dump-context@v1

      - name: Checkout branch contents
        uses: actions/checkout@v3

      - name: Install Ruby packages
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: "3.0"
          bundler-cache: true

      - name: Get Pages url
        id: pages
        uses: actions/configure-pages@v2
        with:
          enablement: false

      - name: Build live version of site
        run: |
          JEKYLL_ENV=production bundle exec jekyll build --baseurl "${{ steps.pages.outputs.base_path || '' }}"

      - name: Commit live site to Pages branch
        uses: JamesIves/github-pages-deploy-action@v4
        with:
          folder: _site
          clean-exclude: ${{ env.PREVIEWS_FOLDER }}
          force: false