build-and-deploy.yml

name: Build and Deploy RMarkdown Website
on:
  workflow_dispatch:
  push:
    branches: main
  pull_request:
    branches: main

jobs:
  build:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-pandoc@v1

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true
          r-version: 'renv'

      - uses: r-lib/actions/setup-renv@v2

      - name: Render Site
        run: Rscript -e "rmarkdown::render_site(encoding = 'UTF-8')"

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v1
        with:
          path: ./_site

  # Deployment job
  deploy:
    if: github.event_name != 'pull_request'
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    needs: build
    # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
    permissions:
      pages: write      # to deploy to Pages
      id-token: write   # to verify the deployment originates from an appropriate source
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v1