I'm not sure what you're imagine an "internet server" to be...
So since your server application runs on linux you just have to find a server provider (or setup one of your own) that let's you install applications (VM or full access servers probably, e.g.
Hetzner.de) and then just install your application and run it.
A server is mostly nothing else than your normal PC, just that its hardware is layed out for extensive use, but the software/OS is just linux.