Hugo setup

The theme used here is the hugo-book via a submodule — the theme setup (at the time of writing) installation instructions uses a standard git clone but importing this as a submodule is highly recommended as per the hugo official guide.

git submodule add https://github.com/alex-shpak/hugo-book.git themes/hugo-book

However, our .github/workflows/hugo.yaml differs from the official guide in that our Checkout action is set to a shallow clone only.

with:
  fetch-depth: 0