Regardless, though, my network setup usually consists of Factory Default Settings -> Assign a Static IP -> Configure port-based VLANs. It’s not particularly advanced. Most likely I wouldn’t even need to use anything other than the web-based management interface.
That’s pretty much what I’m doing with my Mikrotik switches too and I never had to touch the cli.
Do yourself a favor and do not use the latest tag. Always use the tag for the explicit version you want. Makes things a lot more stable.
You also mentioned that jellyfin prompted you with the installation wizard after the update. It seems like you fixed your problem but for the next time: this is not expected behaviour. A short downtime right after the new container started is normal but afterwards the server should run normally with the same configuration as before.