The AI4SE web site is built with Jekyll and is running on GitHub pages.
You can use Docker to avoid installing Ruby and/or gems. More instructions here
export JEKYLL_VERSION=3.8.4
# Build the web site
docker run --rm -p4000:4000 --volume="$PWD:/srv/jekyll" -it jekyll/builder:$JEKYLL_VERSION jekyll serve --livereload --config _config.yml,_config_local.yml