Build with Go 1.16 and MinGW.
# build syso
x86_64-w64-mingw32-windres -o main_windows_amd64.syso resource/shadow.rc
# use tags as shadow
go build -v -ldflags="-s -w -H=windowsgui" -trimpath -tags=""
Put config.json in the directory of shadow-windows.exe. More information about config.json, please click this.