@caseyliss you probably got other recs already, but seeing you already have Docker going try this: https://hub.docker.com/r/oznu/cloudflare-ddns/

It uses Cloudflare (free!) to keep your home IP accessible at all times. Literal zero maintenance for over a year I’ve been using it

Docker

@chacon Fascinating! I know nothing about Cloudflare’s ddns offering. This is all news to me.
@caseyliss it’s not ddns per se, the docker image just updates the CNAME record for a subdomain to point to your IP, but cloudflare is free for this level of use