RubyGems

Activate the RubyGems API Key Realm to publish. gem signin asks for the user name and password and stores the user's API key for the repository:

gem signin --host https://astrum.example.com/repository/rubygems-hosted/
gem push mylib-1.0.0.gem --host https://astrum.example.com/repository/rubygems-hosted/
gem yank mylib -v 1.0.0 --host https://astrum.example.com/repository/rubygems-hosted/

To install, use a group (or a proxy of rubygems.org) as the source, with credentials in the URL or in Bundler's configuration (keyed by host name):

gem install mylib --clear-sources --source https://astrum.example.com/repository/rubygems-group/
bundle config set --global astrum.example.com "ci-reader:$ASTRUM_PASSWORD"

and in the Gemfile: source "https://astrum.example.com/repository/rubygems-group/". To use the repository as a mirror of rubygems.org run bundle config set --global mirror.https://rubygems.org https://astrum.example.com/repository/rubygems-group/.