Yup, proxmox is great.

Note that you can’t (or rather, shouldn’t) run docker containers on proxmox. Most people run a vm and then docker inside that. And yes, I use Debian for it

You can give proxmox a docker container reference, but it’ll download and convert it to LXC, which means you can’t update the container. You’d have to update the container’s os and the app manually, or redeploy the container and reattach the storage.