root@docker0:/tmp/ansible/base-project# kitchen list
Instance            Driver  Provisioner      Verifier    Transport  Last Action
Common-ubuntu-1404  Docker  AnsiblePlaybook  Serverspec  Ssh        Set Up
root@docker0:/tmp/ansible/base-project# kitchen login Common-ubuntu-1404
$$$$$$ Running legacy login for 'Docker' Driver
Last login: Thu Mar 31 11:18:17 2016 from 172.17.0.1
kitchen@2f92a59ec673:~$ which rspec
/home/kitchen/.rvm/gems/ruby-2.3.0/bin/rspec

kitchen@2f92a59ec673:~$ gem list

*** LOCAL GEMS ***

ansible_spec (0.2.10)
bigdecimal (1.2.8)
bundler (1.11.2)
bundler-unload (1.0.2)
did_you_mean (1.0.0)
diff-lcs (1.2.5)
executable-hooks (1.3.2)
gem-wrappers (1.2.7)
hostlist_expression (0.2.1)
io-console (0.4.5)
json (1.8.3)
minitest (5.8.3)
multi_json (1.11.2)
net-scp (1.2.1)
net-ssh (3.0.2)
net-telnet (0.1.1)
oj (2.15.0)
power_assert (0.2.6)
psych (2.0.17)
rake (11.1.2, 10.4.2)
rdoc (4.2.1)
rspec (3.4.0)
rspec-core (3.4.4)
rspec-expectations (3.4.0)
rspec-its (1.2.0)
rspec-mocks (3.4.1)
rspec-support (3.4.1)
rubygems-bundler (1.4.4)
rvm (1.11.3.9)
serverspec (2.31.0)
sfl (2.2)
specinfra (2.55.0)
test-unit (3.1.5)

kitchen@2f92a59ec673:~$ cat ./.bashrc | grep rvm
export PATH="$PATH:$HOME/.rvm/bin" # Add RVM to PATH for scripting
source /home/kitchen/.rvm/scripts/rvm