public function registerContainerConfiguration(LoaderInterface $loader)
{
$loader->load(SuluTestBundle::getConfigDir() . '/config.php');
// @see https://github.com/symfony/symfony/issues/7555
$envParameters = $this->getEnvParameters();
$loader->load(function ($container) use($envParameters) {
$container->getParameterBag()->add($envParameters);
});
}