Add this to ~/.ssh/config
Host * UseKeychain yes
You will still need to enter your password once more, make sure to source your shell
This guide enables you to install (ruby-build) and use (rbenv) multiple versions of ruby, isolate project gems (gemsets and/or bundler), and automatically use appropriate combinations of rubies and gems.
# Ensure system is in ship-shape. aptitude install git zsh libssl-dev zlib1g-dev libreadline-dev libyaml-dev