On Windows, doesn't this technically mean OP is running Linux inside a Linux VM inside Windows? From what I understand Docker is Linux tech and to use it anywhere else a (small) Linux VM is required. If true, I would just dispense with the extra layer and just run a Linux VM. Not to discourage experimentation though!
Almost. For one thing, Docker is not really "Linux inside Linux". It uses Linux kernel features to isolate the processes inside a container from those outside. But there is only one Linux kernel which is shared by both the container and its host (within the Linux VM, in this case). For another, running Linux containers in a Linux VM on Windows is one (common) way that Docker can work. But it also supports running Win…
Running Linux containers using Docker Desktop has a small Linux VM in which the containers are run and then Docker does some mucking about to integrate that better with the Windows host OS.