[Hidden-tech] Installing Linux --> Docker on Win10

[Alan Frank]

I tracked down (with difficulty) the way to revert to WSL1 
(https://github.com/MicrosoftDocs/WSL/issues/590):

wsl --set-default-version 1

After executing this, I was able to run Fedora.

I appreciate some of the other suggestions, and they might have been 
theoretically better, but given that I felt I was most of the way there, 
I didn't want to start over with something new.

Thanks to all,

Alan