title: Where to store config parameters?
body: <p>Reading Config section for 12 factor app : <a href="https://12factor.net/config" rel="noreferrer">https://12factor.net/config</a> it states "Another approach to config is the use of config files which are not checked into revision control" . Instead "The twelve-factor app stores config in environment variables " If not store config in source/revision control then where should config for environment variables be stored ?</p>
  
  <p>For example a new developer joins a team how does that same developer access the environment variables in order to run the app ? Is it assumed an environment is provided that contains variables that allows app to run? </p>