My setup exists of one local server that basically hosts Jellyfin and an arr stack.
I only access this server locally with PC, TV and phone, however I might setup a Wireguard based remote access in the future.
Should I use a reverse proxy like Caddy so I can access the different containers with a local domain name like jellyfin.myserver.local?
I am also interested in hosting Adguard home but how can this work together with Caddy, won't they both conflict as a DNS server?
Unless something has changed, Caddy isn’t a dns server. It’s a web server and reverse proxy. If you might expose something to the public internet, you will want it behind the reverse proxy.
If you want to access local network services (private vpn counts) via a domain name all you need is a DNS server and for you clients setup to query that dns server. I use PiHole for this. From what I understand Adguard may be similar to PiHole but I’ve never looked a it.
One thing to be wary of, there are no reserved private network domains. Depending on how you set things up your local network dns queries may go out onto the public internet. It’s best to go ahead and register a domain name that you want to use so that you can control it routing if that happens. They can be had cheap as $11 USD each.