potential fix for docker-in-docker

[kaczmarj]

i noticed that the readme says

NOTE: Docker-in-docker does not seem to currently be working.

have you tried mounting the docker socket into the container? you can use these arguments in docker run.

-v /var/run/docker.sock:/var/run/docker.sock

[matthewsot]

Thanks for pointing this out! So far, it hasn't been a huge issue, but if anyone wants to try and get this working + test this solution it's great to have the tip.

[matthewsot]

I've added a link to this in the readme as part of #9. If anyone wants to make the changes to the scripts throughout + confirm that it works, feel free to send a PR. But for now hopefully this gives interested people enough of a pointer to chase down :) Thanks again!