Support ad-hoc docker execution in the VM's docker

[bloodearnest]

The docker service in the Ubuntu VM is used by job-runner and can execute jobs submitted by job-runner.

However, some Bennett staff (researchers and tech team) needs to sometimes manually run docker. The tooling and documentation for this is based on using Docker for Windows.

So, we have kept Docker for Windows (with a much smaller resource allocation) around to continue to support this workflow.

This is not ideal:

a) Docker for Windows doesn't always come up after a reboot.
b) So that researchers can release outputs from these notebooks, we have to run hacky sync script from Windows host into the VM so that the TPP level 4 sync script can move them to level 4.
c) Would be nice to remove Docker for Windows and its resource usage.

The long term solution probably involves sqlrunner, but it's likely we'll still need an ad-hoc query mechanism.

We could point the docker client on the Windows host to the docker service running on the VM, perhaps over SSH auth. This would mean all users would need SSH set up.

However, while this would work for executing docker containers, we may need some trickery to mount workspaces in.

Another option is to just move all the tooling to require working over SSH in the VM. That might be reasonble, but add some additional friction to an already awkward process for researchers using this.