fluxsauce.com
This site uses Jekyll to statically generate the site. See https://jekyllrb.com/ for details.
I prefer using rbenv over RVM, If you don't already have it, the rbenv-installer makes light work of it.
eval "$(rbenv init -)"
rbenv install 2.7.0
rbenv local 2.7.0
bundle
bundle exec jekyll serve --config ./_.config.yml