Rails Cloud 9 Installation

railscloud9.txt

ruby:
  Simple rvm install
  
yarn: 
  https://linuxize.com/post/how-to-install-yarn-on-centos-7/

postgres:
  https://medium.com/@floodfx/setting-up-postgres-on-cloud9-ide-720e5b879154
  I ended up using `postgres` user instead of `ec2-user` ^
  ident error: https://stackoverflow.com/a/7526119/1094339
  
Redis:
  sudo yum install redis
  sudo service redis start
  
memcached:
  sudo yum install memcached
  sudo service memcached start
  
  
Preview:
  add the ip: https://stackoverflow.com/questions/29417328/how-to-disable-cannot-render-console-from-on-rails
  remove the https and use http in a browser window.
  
github always logged in:
  https://stackoverflow.com/a/17979600/1094339