ARTEMiS is designed to run in one of two ways. Developmen/local mode, which assumes you're just trying to set up something to save your scores and make the games work, and have patched your games to disable SSL and cert checks and encryption and the like, and production mode. In production mode, artemis assumes you have a proxy server, such as nginx or apache, standing in front of artemis doing HTTPS and port management. This document will cover how to properly set up a production instance of ARTEMiS.
If this describes you, your only configuration needs are to edit the `server_name` and `certificate_*` directives. Otherwise, please see nginx configuration documentation to configure it to best suit your setup.