[Feature]: Support native deployments (without docker, includes example)

Feature detail Thanks for the great app! One thing that I'm dearly missing is the ability to deploy this on bare-metal, without relying on docker. The problem is that in certain situations, docker might not be a viable option to deploy a project. I for example am using an extremely strict nftables firewall, for which docker simply has no compatibility (and docker will likely still take some years to catch up). Furthermore, I deploy each application in its own KVM virtual machine with libvirt, so docker would just be an unnecessary overhead for me. I have already managed to get immich running without docker just fine, it would just be missing a tiny bit of packaging to make the process more accessible and repeatable. I've attached my scripts to build and deploy immich below in case you (or any other people stumbling over this) are interested. Installing on bare-metal 1. Create user for immich (/var/lib/immich) 2. Create environment file /var/lib/immich/env (adapt…