installation-bundle/src/DependencyInjection/ContaoInstallationExtension.php
public function prepend(ContainerBuilder $container): void
    {
        $configDir = $container->getParameter('kernel.project_dir').'/app/config';

        if (file_exists($configDir.'/parameters.yml') || !file_exists($configDir.'/parameters.yml.dist')) {
            return;
        }

        $loader = new YamlFileLoader(
            $container,
            new FileLocator($configDir)
        );

        $loader->load('parameters.yml.dist');
    }
public function prepend(ContainerBuilder $container): void
    {
        $configDir = $container->getParameter('kernel.project_dir').'/app/config';

        if (file_exists($configDir.'/parameters.yml') || !file_exists($configDir.'/parameters.yml.dist')) {
            return;
        }

        $loader = new YamlFileLoader(
            $container,
            new FileLocator($configDir)
        );

        $loader->load('parameters.yml.dist');
    }
{@inheritdoc}