There's a closed pull request on the void-packages repository

WIP: update moby run to work with containers
https://github.com/void-linux/void-packages/pull/41273

Description:
Two things need to change when we're running docker in a virtual environment (LXC/D): first, we shouldn't test for the loop module, which might not exist/be loadable within the container. Second, we need a different cgroup mount command.

This PR is blocked on https://github.com/void-linux/void-runit/pull/102 since the virtualization detection is currently unavailable to runsv scripts. Once https://github.com/void-linux/void-runit/pull/102 is merged, I'll remove the WIP designator.

<!-- Uncomment relevant sections and delete options which are not applicable -->

#### Testing the changes
- I tested the changes in this PR: **YES** - but note - they've only been tested in virtual environments (I don't have docker running on bare metal void).


#### Local build testing
- I built this PR locally for my native architecture, `Linux lithium 6.0.13_1 #1 SMP PREEMPT_DYNAMIC Fri Dec 16 02:05:26 UTC 2022 x86_64 GNU/Linux` (glibc)