Nice one. However, VirtualBox's shared-folder support is so god-awfully slow, that here at work we all swapped out the regular boot2docker setup for boot2docker-xhyve[0] which is so much faster at nearly everything that it's not even a comparison.
Now, with ailispaw's dockeroot-xhyve you can even get a VM root image that can be grown on the fly, so you never run out of space on your VM when building large Docker images.
In addition, I'd never recommend Docker Compose to web developers that rely on databases, as quirks with it have caused many a volume-only container to be destroyed and rebuilt, thus defeating the purpose.
Now, with ailispaw's dockeroot-xhyve you can even get a VM root image that can be grown on the fly, so you never run out of space on your VM when building large Docker images.
In addition, I'd never recommend Docker Compose to web developers that rely on databases, as quirks with it have caused many a volume-only container to be destroyed and rebuilt, thus defeating the purpose.
[0] https://github.com/ailispaw/boot2docker-xhyve