Proxmox

Yes, but the VM’s virtual network interface needs to be configured to pass VLAN tags. In Proxmox, this means the bridge the VM uses must be VLAN-aware, and the VM’s interface should either be on a trunk or have the specific VLAN tag set. See the Proxmox VLAN configuration guide for the full setup. If you’re just getting started with Docker in Proxmox, setting up Docker in Proxmox via a VM is worth reading first.

It depends on whether your host has integrated graphics or a second GPU for the hypervisor. If the host can keep its own display adapter, other VMs like Home Assistant on Proxmox run independently and aren’t affected by the GPU being passed through to a different VM. Security note: IOMMU configuration and kernel parameters affect system-level isolation. Review any changes in the context of your threat model — especially allow_unsafe_interrupts, which weakens IOMMU isolation. Security best practices in this area continue to evolve.

Ansible is one of my favorite things to use in my home lab for automating the tasks I dislike, and it's perfect for Proxmox updates with the community.proxmox.proxmox_pct_remote collection module installed. Once that's available, we can create a playbook that creates a dynamic inventory of your Proxmox LXCs and other containers, so that you can call them in other Ansible playbooks: Then we create a playbook like this, that will update Debian/Ubuntu LXCs. If you have other LXC bases, you can adjust accordingly for the package manager, and for the Proxmox tag group that you mihght have them sepa

The decision really comes down to two things: what hardware you already have running, and whether you want to run Pi-hole as a dedicated service or alongside other containers. Use the native install (Raspberry Pi, Ubuntu, or Proxmox LXC) if: You want a dedicated Pi-hole instance with minimal other services running on it You’re running Pi-hole on a Raspberry Pi or any Debian-based Linux distribution You’re running it in a Proxmox LXC and don’t need Docker on top You want the simplest, most-supported setup with the least amount of moving parts Use the Docker install if: You already use Docker