'ascii' codec can't encode character '\uc790' in docker

 put this line in Dockerfile

ENV LANG C.UTF-8

^^

MFC Encode / Decode example souce code

WtoC function code is here
http://study.marearts.com/2017/01/unicode-cstring-convert-to-char.html

And refer to GetMacAddress code
http://study.marearts.com/2017/01/get-mac-address-in-mfc.html

Encode code
//

..

Decode code
//

..