add twig to container

bootstrap/app.php

@@ -3,16 +3,21 @@
 use Psr\Http\Message\ResponseInterface as Response;
 use Psr\Http\Message\ServerRequestInterface as Request;
 use DI\Bridge\Slim\Bridge;
+use Slim\Views\Twig;
+use Slim\Views\TwigMiddleware;
 
 $container = require __DIR__.'/container.php';
 $app = Bridge::create($container);
 
+$app->add(TwigMiddleware::create($app, $container->get(Twig::class)));
+
 // change first param to false for production
 $app->addErrorMiddleware(true, true, true);
 
-$app->get('/', function (Response $response) {
-    $response->getBody()->write("Hello world!");
-    return $response;
+$app->get('/admin', function (Response $response, Twig $twig) {
+    return $twig->render($response, 'admin.html.twig', [
+        'name' => 'John',
+    ]);
 });
 
 return $app;