@Override
        protected void processLine(String line) {
            log.info("Docker machine \"%s\" is %s",machine.getName(),line.toLowerCase());
            if ("Running".equals(line)) {
                status = Status.Running;
            } else if ("Stopped".equals(line)) {
                status = Status.Stopped;
            } else {
                message = "Unknown status - " + line;
            }
        }
launch docker-machine to obtain environment settings
src/main/java/io/fabric8/maven/docker/access/DockerMachine.java