Add Ruby 2.1 instruction to the Nginx example config
Add Ruby 2.1 instruction to the Nginx example config

vfulco/passenger-docker,atyenoria/passenger-docker,ThePFMind/passenger-docker,atyenoria/passenger-docker,hopsoft/passenger-docker,phusion/passenger-docker,ThePFMind/passenger-docker,wellic/passenger-docker,vfulco/passenger-docker,orangeeli/passenger-vagrant,akash1808/passenger-docker,akash1808/passenger-docker,hopsoft/passenger-docker,ties/passenger-docker,glycerine/passenger-docker,wellic/passenger-docker,phusion/passenger-docker,ties/passenger-docker,glycerine/passenger-docker