Literally thousands of people host other services on the same server as discourse. There are ways to do this. If you do your research, it is a very well supported usecase. You need to put it behind a reverse proxy to achieve it.
Here is one way of doing it Running other websites on the same machine as Discourse
I have my public discourse sandbox hosted on a NUC which hosts multiple other services behind Nginx Proxy Manager but that’s my way of doing it. It isn’t officially supported but I know my way around it.