####Scope your gems to your app:
bundle install --path vendor/bundle
####Ensure that bundle install has been run locally
(ie, there are no gems in Gemfile that do not match the lockfile
bundle install --frozen
####Better yet:
bundle install --deployment combines these two excellent features.
####Even better yet:
require 'bundler/capistrano'
This is configurable:
set :bundle_without, :test ...and many more at http://www.gembundler.com
####Misc
Bundler 1.1 will be faster at fetching source index and be able to reference gems on github more easily :github => 'rails/rails'
The Gemfile.lock ensures that even if you haven't specified specific gem versions, other people who bundle install in your app will get the same versions that were found when the lockfile was generated.
Generally, when doing other commands in your app: use bundle exec
Stop using the mysql gem. Use the mysql2 gem.
Read up on: bundle config