It may be better now but I’ve always had problems with Docker in LXC containers; I think this has to do with my storage backend (Ceph) and the fact that LXC is a pain to use with network mounts (NFS or SMB); I’ve had to use bind mounts and run privileged LXCs for anything I needed external storage for.

Proxmox is about managing VMs and LXCs. I’d just create a VM and do all your docker in there. Perhaps make a second VM so you can shuffle containers around while doing upgrades.

If you plan to have your whole setup be exclusively Docker and you have no need for VMs or LXCs, then Proxmox might be a bunch of overhead you don’t need.

I use the LXCs for simple stuff that does a bare-metal type install within them, and I use the VMs for critical services like OPNSense firewall/routers. I also have a Proxmox cluster across three machines so I can live-migrate VMs during upgrades and prevent almost any downtime. For that use case it’s rock solid. It’s a great product and it offers a lot.

If you just need a single machine and only Docker, it’s probably overkill.

How should Jellyfin be set up, lxc or vm

Either way. I prefer lxc, personally, but to each their own. lxc I think is drastically easier, in part because you don't need to pass through the whole GPU....

Is there a way to enable iGPU to pass to an lxc or VM without editing a .conf in nano?

You don't need to pass the igpu, you just need to give the LXC access to render and video groups, but yes, editing the conf is easiest. I originally wrote out a bunch here, then remembered there is a great video.

https://www.youtube.com/watch?v=0ZDr5h52OOE

My Synology NAS is mounted to the host, but making mount points to the lxc doesn’t actually connect data

Do they show up as resources? I add my mount points at the CLI personally, this is the best way imo:

pct set 100 -mp0 /mnt/pve/NAS/media,mp=/media

This is done from the host, not inside the LXC.

Does your host see the mounted NAS? After you added the mount point, did you fully stop the container and start it up again?

Edit: You can just install curl/wget/etc BTW, its just Debian in there.

apt install curl

Edit 2: I must have glossed over the mount part.

Dont add your network storage manually, do it through proxmox as storage, by going to Datacenter > Storage > Add, and enter the details there. This will make things a lot easier.