Run pi hole on router instead of vps

[kevinh-csalabs]

Describe the solution you'd like

Switch Pi Hole installer script to run on router instead of VPS

Describe alternatives you've considered

I've tried setting backup DNS and strict order but this didn't work reliably. If the DNS failed it would begin using the backup DNS which wouldn't filter like pi hole even once VPS dns became available again

Additional context

If Pi Hole runs on the router then as long as the local connection is working DNS can be resolved via Pi Hole. If the router is relying on the VPS connection this can result in DNS not resolving or unexpected DNS lookup results when the VPS is down or bypassed for any reason.

[Ysurac]

Pi-Hole can't be installed on OpenMPTCProuter, or maybe inside a docker... You can install Pi Hole on another device and use it via OpenMPTCProuter.