I’ve been doing this in my kubernetes cluster since immich was less than v1.49.0 (that’s the earliest I can find but it’s been over 4 years).
Your comment could have been more constructive: something like “this is really cool, just be sure you don’t auto merge PRs without reading the patch notes. Learn about the process before you roll this out to your mission critical systems!”
This is a learning opportunity (possibly even for you). Show others how to do things well and the whole community can benefit.
Gitops is your friend

In this guide I will go over how to automatically search for and be notified of updates for container images every night using Renovate, apply those updates by merging pull requests for them in Gitea, and automatically redeploy the updated containers using Komodo.
How do they safely catch them?
Internet is slow. Answered already. Mist nets