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