Rails bundler doesn't install gems inside a group

Question

I have several gems including ruby-debug in a bundler group called :development. When I run the bundle command, these gems are ignored and it only installs the gems that are

Answer 1

I had a similar problem - thin in staging ignored - and the solution was to put it out if staging into the 'global' space:

gem 'thin'

group :production do
  gem 'puma'
end