Thanks Michael,
My Windows 10 Pro has Anniversary Edition installed. So I am wondering whether this explains the absence of any Windows OS Hyper-V VM being shown in Hyper-V Manager (as there is for MobyLinux) after running the Hello-World app when in Windows container development mode (as set in DOcker taskbar applet). I do not believe there is a way for a Hyper-V VM to be created and run without it appearing in Hyper-V manager but I could be mistaken about that.
I read that Windows might let Nano atrophy and die because the footprint and resource requirements are not much less than Windows Server container…or so it was posited in a blog I read.