Build sigil on Windows

sigil.md

run from docker host "docker ssh default"

sudo docker run -it --rm --privileged -v /var/run/docker.sock:/var/run/docker.sock golang
go get github.com/gliderlabs/sigil
pushd src/github.com/gliderlabs/sigil
sed -i "s#linux#linux,windows#g" ./Makefile
make deps
make install

run "docker ps" to identify <container_id>

docker cp <container_id>:/go/src/github.com/gliderlabs/sigil/build/Windows/sigil sigil.exe