Imports code.google.com/p/goauth2/oauth github.com/Sirupsen/logrus github.com/codegangsta/cli github.com/docker/machine/drivers github.com/docker/machine/provider github.com/docker/machine/ssh github.com/docker/machine/state google.golang.org/api/compute/v1 Standard library imports encoding/gob fmt io/ioutil net/http net/url os os/exec path path/filepath strings time