Here are several things that you can do (from more to less affordable): - Setup public IP updating. You server runs a daemon that updates the DNS record automa

Here are several things that you can do (from more to less affordable): - Setup public IP updating. You server runs a daemon that updates the DNS record automatically. You can do that with NameCheap. ($) - You can pay 5$ to have a digital ocean droplet that acts as a reverse proxy that just forwards traffic to your real server. ($$) - You can pay for "entreprise" service and get a static IP. ($$$)