I needed a way to compile on my mac for linux targets so this seemed to be the fastest and easiest way to cross compile. Use the -v to mount your local GOPATH to /usr/local/gospace in the container and run with -it...
$> docker run -it -v /local/path/to/gospace:/usr/local/gospace/ dharmadog888/gospace
You will land on a prompt in the container and your GOPATH should be ready for action.
Note: You can use this as a base to run Go apps but it would prolly be better to just hack the Dockerfile and replace teh ENTRYPOINT