instructure/canvas-lms — pull request #539 by kjellm (2014-10-31 12:49:49+00:00)
Title: Always run config file through ERB

I am setting up Canvas in a Docker environment, and so I need to be able to use environment variables in configuration files. I was unable to do that in `config/outgoing_mail.yml`. This patch enables this by always running config files, that gets loaded by `lib/config_file.rb`, through ERB.