Imports github.com/Sirupsen/logrus github.com/codegangsta/cli github.com/docker/machine/drivers/amazonec2/amz github.com/docker/machine/ssh github.com/docker/machine/state github.com/docker/machine/utils github.com/docker/machine/provider github.com/docker/machine/drivers Standard library imports crypto/md5 crypto/rand errors fmt io io/ioutil net/url path/filepath strconv strings