From here: https://akademie-oeffentliches-gesundheitswesen.github.io/Buchvorlage/vivliostyle/
add unzipped EPUB by pasting in ../webbuch/
Note: /vivliostyle and /webbuch are on the same directory level
Follow the instructions here https://docs.github.com/en/enterprise/2.14/user/articles/setting-up-your-github-pages-site-locally-with-jekyll
If Gemfile already present on top level of repository then just serve with
bundle exec jekyll serve --incremental
Gemfile will have this contents
source 'https://rubygems.org' gem 'github-pages', group: :jekyll_plugins
Site will be on http://127.0.0.1:4000/
On windows add: gem 'wdm'
Use:
{% include image.html url="65b1a628-3996-4bd2-8933-b3c50774f530.png" description="Tabelle 1: KJGD relevante Regelungen in den GDGs der Länder" %}
Add images for Jekyll to: /images