https://meiert.com/en/blog/eleventy-github-workflow/

tests.yml

name: "Tests"

on:
  push:
    paths:
      - ".nvmrc"
      - "package.json"
      - "package-lock.json"

jobs:
  build:
    name: "Test changed package*.json and changed Node versions"
    runs-on: ubuntu-latest
    steps:
      - name: "Check out repository"
        uses: actions/checkout@v4
      - name: "Set up Node.js using .nvmrc information"
        uses: actions/setup-node@v4
        with:
          node-version-file: ".nvmrc"
      - name: "Install dependencies"
        run: npm ci
      - name: "Run Eleventy"
        run: npx @11ty/eleventy --incremental