The site was previously built with Slate.
As of December 2020 it was a redirect to a new guide at learn-rails.com.
As of May 2021 it was a reformatting of the learn-rails.com install guide with a link pointing to the original.
As of July 8, 2021 it was again a redirect to the guide at learn-rails.com.
The site is deployed at Netlify. Pushing to the master branch should trigger an automatic deploy.