Hi @meikel
Small Question, but big problem 
There is in official documentation only available to use docker with :latest tag. Which is bad idea. And listing tags from project is not possible(*), because project is private (or simply does not allow tag listening / does not provide more tags then :latest).
Currently I do not know, hot to resolve it. Maybe @dragonfire1119 accept my PR with :latest tag?
*-
https://ghcr.io/v2/homarr-labs/homarr/tags/list
returns unauthorized