There are instructions for GH Pages using Travis https://rust-lang.github.io/mdBook/continuous-integration.html#deploying-your-book-to-github-pages But I am a fan of using GH Actions. I have a workflow in use here which I would be happy to add to the guide. https://github.com/MichaelCurrin/mdbook-quickstart/blob/main/.github/workflows/main.yml