Self host on a raspberry pi?

Hello,

I would like to self host either on my machine, or on a raspberry pi. I don't absolutely need to access it from outside my network, but it would be a plus. I have read this page: https://docs.piped.video/docs/self-hosting/ , but I'm a bit lost on how to set up hostnames. Maybe I can use something like DuckDNS: https://www.duckdns.org/