Add container access

src/Instance.php

@@ -224,4 +224,16 @@ class Instance
 
         $this->container = $builder->build();
     }
+
+    public function has(string $key): bool {
+        return $this->container->has($key);
+    }
+
+    public function get(string $key, $default = null) {
+        if (!$this->container->has($key)) {
+            return $default;
+        }
+
+        return $this->container->get($key);
+    }
 }