public function scale($scale)
    {
        $cmd = "docker-compose scale app=$scale && docker-compose up -d --no-deps load";
        $process = new Process($cmd, $this->getDockerComposePath());
        $process->setTimeout(null);
        $process->run(function ($type, $buffer) {
            if (Process::ERR === $type) {
                echo 'DOCKER > '.$buffer;
            } else {
                echo 'DOCKER > '.$buffer;
            }
        });
        if (!$process->isSuccessful()) {
            return false;
        } else {
            return $process->getOutput();
        }
    }