[kwlug-disc] Running Docker in LXD

[Mikalai Birukou]

Yes. This is possible using configuration security.nesting=true: 
https://stgraber.org/2016/04/14/lxd-2-0-lxd-in-lxd-812/

No, it is not an insanity.

Use case is simple. We want to have gitlab and gitlab runner on the same 
machine. But we want all these things setup cleanly and separately, so 
we use LXD. From Gitlab's docs we learn that Docker executor is the best 
( 
https://docs.gitlab.com/runner/executors/README.html#compatibility-chart 
). Hence a need to run Docker inside LXD.

This is fun :)