I was having this exact issue: Rvm and gems, bundle show and gem list
I followed the advice of one of the answers and looked at the capistrano RVM docs (https://github.com/rvm/rvm-capistrano#disabling-bundle---deployment-when-using-gemsets)
So I added this to my staging.rb file:
set :bundle_dir, ''
set :bundle_flags, '--system --quiet'
On deploy [cap staging deploy] I get this error:
You have specified both a path to install your gems to,
as well as --system. Please choose.
I have not specified another path and am wondering what I am doing wrong here.