在Laravel Dusk中使用不同的浏览器

Question

I want to use a different browser in laravel Dusk . so I do as the Documentation says

public static function prepare()
{
     //static::startChromeDriver();

}

protected function driver()
{

    return RemoteWebDriver::create(
        'http://localhost:4444/wd/hub', DesiredCapabilities::phantomjs()
    );
}

But It gives the following Error:

1) Tests\Browser\ApiLoginTest::api_login_check_for_user Facebook\WebDriver\Exception\WebDriverCurlException: Curl error thrown for http POST to /session with params: {"desiredCapabilities":{"browserName":"phantomjs","platform":"ANY"}} Failed to connect to localhost port 4444: Connection refused

What is wrong? How can I configure laravel dusk to use a different browser eg. Firefox?