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Development

This document describes the process for running this application on your local computer.

Getting started

This site is powered by Node.js! ✨ 🐢 🚀 ✨

It runs on macOS, Windows, and Linux environments.

You'll need Node.js version 12 or 14 to run the site. To install Node.js, download the "LTS" installer from nodejs.org. If you're using nodenv, read the nodenv docs for instructions on switching Node.js versions.

Once you've installed Node.js (which includes the popular npm package manager), open Terminal and run the following:

git clone https://github.com/github/docs
cd docs
npm install
npm run build
npm start

You should now have a running server! Visit localhost:4000 in your browser. It will automatically restart as you make changes to site content.

When you're ready to stop your local server, type CTRLc in your terminal window.

Note that npm run build is a one-time step that create static assets.

Using GitHub Codespaces

As an alternative, you can simply use GitHub Codespaces.

In a matter of minutes, you will be ready to edit, preview and test your changes directly from the comfort of your browser.

Viewing a top-level table of contents

While running the local server, you can visit localhost:4000/dev-toc to view a top-level TOC of all the content in the site. This page is not available on https://docs.github.com. It was created for internal GitHub writers' use.

At the /dev-toc path, you'll see a list of available versions. Click a version, and a list of products will appear. Note that the TOC content is versioned. If you are viewing free-pro-team@latest and you click the Enterprise Admin product, it will be empty, because there isn't any Admin content available on that version.

Site structure

This site was originally a Ruby on Rails web application. Some time later it was converted into a static site powered by Jekyll. A few years after that it was migrated to Nanoc, another Ruby static site generator.

Today it's a dynamic Node.js webserver powered by Express, using middleware to support proper HTTP redirects, language header detection, and dynamic content generation to support the various flavors of GitHub's product documentation, like GitHub.com and GitHub Enterprise Server.

The tooling for this site has changed over the years, but many of the tried-and-true authoring conventions of the original Jekyll site have been preserved:

  • Content is written in Markdown files, which live in the content directory.
  • Content can use the Liquid templating language.
  • Files in the data directory are available to templates via the {% data %} tag.
  • Markdown files can contain frontmatter.
  • The redirect_from Jekyll plugin behavior is supported.

For more info about working with this site, check out these READMEs: