How to access contract references in lumen?

Hi, I'm new to Laravel and Lumen. But I have a laravel app to convert in to lumen. This is my index.php in laravel $app = require_once DIR.'/../bootstrap/app.php'; $kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);

$response = $kernel->handle( $request = Illuminate\Http\Request::capture() );

$response->send();

$kernel->terminate($request, $response);

how can i convert this part to lumen? Could you please help me to solve this problem?