staging:
  deploy_to: /var/www/my_app_name
  servers:
    -
      host: staging.example.com
      user: deploy
      roles:
        - app
        - db
        - web

production:
  deploy_to: /var/www/my_app_name
  servers:
    -
      host: www.example.com
      user: deploy
      roles:
        - app
        - db
        - web