Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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That sounds overly complicated, why get VMs involved? Just install Debian or something and get things working.
Proxmox is good if you know you want multiple VMs running for specialized needs. But multiple VMs isn't happening on 4GB RAM.
Easily can have multiple LXCs, and being able to take snapshots for backup is probably a nice thing to have if you're just learning.
And if they get more hardware, moving VMs to other clustered proxmox instances is a snap.
If you just want LXCs, use Docker or Podman on whatever Linux distro you're familiar with. If you get extra hardware, it's not hard to have one be the trunk and reverse proxy to the other nodes (it's like 5 lines of config in Caddy or HAProxy).
If you end up wanting what Proxmox offers, it's pretty easy to switch, but I really don't think most people need it unless they're going to run server grade hardware (i.e. will run multiple VMs). If you're just running a few services, it's overkill.
LXCs are not comparable to Docker, they do different things.
It's the same underlying technology. Yes they're different, but they are comparable.
They use some of the same kernel functions but they are not the same. They are not comparable. LXCs are used to host a whole separate system that shares kernel with its host, docker is used to bundle external requirements and configs for a piece of software for ease of downstream setup. Docker is portable, LXCs much less so.
Sure, Docker is more or less an abstraction layer on top of LXC. It's the same tech underneath, just a different way of interacting with it.