crazy-max/diun is a project I started using in July 2024 to keep track of new releases for docker images. It will on a daily schedule look at the repository on Docker Hub, GitHub Container Registry, etc and see if there is a new tag / image available. It then will send me a discord message that there's an update and I can then go manually check out the release notes and update such.

There are other tools that automatically like containrrr/watchtower, but given my home lab setup has under 10 3rd party docker images that I don't maintain myself at the time of writing this, I felt more comfortable deploying the new images myself.