first you should check logs of cloudflare tunnel - most likely it cannot access your docker network. if you are using cloudflare container - it should use same network as a Immich instance.

in short: find the tunnel log and see what is happening there.

Kinda like it, but there are some ux things I don’t like. i.e. - tags are not in the search

it works fine, depending on popularity of your instance - you might have to add more resources in the future.

as for aarch64 - there are docker images available for lemmy and lemmy-ui