Just wanted to get thoughts / opinions on running docker on a Virtual Machine?
Is this possible, or will it cause an unnesessary overhead?
As Docker is now the recommended path forward I wonder if this could be a problem?
Yes, you can run Docker on a VM. The benefits of virtualisation don’t cross over / nullify the benefits of Docker, or the other way around.
If you are running a VM only for the sake of having an isolated environment, then perhaps it would be unnecessary - but as I say there are many other reasons for running a VM 