[ornornor]

AFAIK it’s the only way to run docker containers on proxmox. You can run lxc containers directly but docker requires an intermediate vm… which is one more reason to avoid docker altogether :)

[salmon]

You can install Docker directly on Proxmox. I did a little comparison of the 3 methods [1].

[1] https://danthesalmon.com/running-docker-on-proxmox/