Some parts of the documentation state that administrative tasks like changing the admin password can be done via the `immich` function, but that is incorrect; instead, the `immich-admin` function should be used.
* WIP: Added immich cli tool to `immich-server` image
* WIP: Added doc entry to show it is preinstalled
* WIP: Moved immich upload cli to `immich` and default to `immich-admin`
* WIP: undid previous commit
* WIP: Updated server docs with new `immich-admin` command