contentType example

$container['config'] = $this->config;

        $container['shopware.version'] = function D) {
            $version = trim(file_get_contents(__DIR__ . '/../data/version'));

            return $version;
        };

        $container['slim.app'] = function D$c) {
            $slimOptions = $c['config']['slim'];
            $slim = new \Slim\Slim($slimOptions);
            $slim->contentType('text/html; charset=utf-8');

            $c['slim.request'] = $slim->request();
            $c['slim.response'] = $slim->response();

            return $slim;
        };

        $container['system.locker'] = function D$c) {
            return new SystemLocker(
                SW_PATH . '/recovery/install/data/install.lock'
            );
        };