I'm actually happy to see this... it's similar to the efforts Joyent took in getting their docker solution in place.. and I'd be really surprised if that isn't one of the goals for this effort.
I tend to lately have a Linux server VM on my desktop, and then SSH into it to do linux things... not having to setup a VM is a bonus imho... Being able to run actual docker, better still, as handling the VM's copy of docker images, and making them accessible outside isn't always fun.
In the end, I think it's pretty cool, and scary all at once.. mainly because too many developers take no effort to making their apps work across platforms... not just Windows, but the BSD and Solaris variants.