Fix container behavior

Author: coisa

src/Container/ConfigContainer.php

@@ -73,10 +73,14 @@ public function has(string $id): bool
      */
     public function get(string $id)
     {
-        if ($this->isResolvedByContainer($id)) {
+        if ($id === self::class) {
             return $this;
         }
 
+        if ($this->isResolvedByContainer($id)) {
+            return $this->config;
+        }
+
         if ($this->config->has($id)) {
             return $this->config->get($id);
         }