Add support for volumes to mount host paths

[qaifshaikh]

Addresses https://github.com/hercules-ci/arion/issues/188

[qaifshaikh]

We use this already for colima in our setups. It works quite well, but we've patched it to an old revision of Marion.

Precisely https://github.com/hercules-ci/arion/blob/a95066a8449765df2ad9c3a0d0c8307f5f52cbd7/src/nix/modules/composition/docker-compose.nix

so I'll need someone to share their input on this please 🙏🏻

[qaifshaikh]

nudge @roberth for review

[srid]

This would be good to have. I've been using docker-compose.raw.volumes.

[roberth]

bors r+

[bors[bot]]

Timed out.

[roberth]

bors r+

[bors[bot]]

Timed out.