Add dotenv package and .env file

index.php

@@ -2,6 +2,7 @@
 
 use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Kernel as BaseKernel;
 use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;
@@ -37,8 +38,9 @@ class Kernel extends BaseKernel
         $routes->import(__DIR__.'/src/Controller/', 'attribute');
     }
 }
+(new Dotenv())->bootEnv(__DIR__.'/.env');
 
-$kernel = new Kernel('prod', false);
+$kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
 $request = Request::createFromGlobals();
 $response = $kernel->handle($request);
 $response->send();