fix(docker): 🐛 Update volume mount for config file

* Change volume mount syntax for config.json to use bind type
* Ensure config file is read-only for security

docker-compose.yml

@@ -10,7 +10,11 @@ services:
       - "8025:8025"
     volumes:
       # Mount config file
-      - ./bin/config.json:/app/config.json:ro
+      - type: bind                                                                                                                                                                            
+        source: ./bin/config.json                                                                                                                                                             
+        target: /app/config.json                                                                                                                                                              
+        read_only: true     
+  
 
       # Mount sessions directory for WhatsApp authentication persistence
       - ./bin/sessions:/app/sessions