Try pass in config as an arg

src/PcmBadgeBundle.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Pcm\BadgeBundle;
 
+use Pcm\BadgeBundle\Twig\Component\Badge;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
 use Symfony\Component\HttpKernel\Bundle\AbstractBundle;
@@ -26,10 +27,10 @@ final class PcmBadgeBundle extends AbstractBundle
          *
          * (see services.yaml)
          */
-        // $container->services()
-        //     ->get('pcm_example.greeting')
-        //     ->arg('$name', $config['name'])
-
+        $container->services()
+            ->get(Badge::class)
+            ->arg('$baseClasses', $config['base_classes'])
+        ;
     }
 }