Right way to deploy Drogon application to production

Many projects tend to use non-embedded web servers in production. Most popular examples are that of Spring(Java), PHP and Flask(Python). It is recommended in Flask's website that Flask not be used with its internal web server at production. Same goes for Spring.

It seems to me that Drogon has an internal web server. Is it supposed to be used in production? If not, how do I use it with a web server like Apache or Nginx?