Enable the slack login via omniauth by entering the following eviroment variables: 
    * API_KEY
    * API_SECRET
    * TEAM_ID

     Set your following discourse's API (should be a general/master API Token):
    * DISCOURSE_API_KEY
    * DISCOURSE_API_USERNAME
    * DISCOURSE_URL

    Set the following enviromental value:
    * ADMIN_EMAILS
    (format: '[email protected],[email protected]')

    Run:
    bundle exec sidekiq
    bundle exec rails server