Local Gemfile

If you want to add gems locally, which should not be committed to the repository:

1. Create a Gemfile.local and put it in .gitignore:

   eval File.read('Gemfile')
    
   gem 'my-other-gem'

2. Set an env var overriding the Gemfile location. For example, put it in .env if you use direnv.

   BUNDLE_GEMFILE=Gemfile.local