Set MongoDB port back to its default

docker-compose.yml

@@ -3,7 +3,7 @@ services:
     ytdl_material:
         environment: 
             ALLOW_CONFIG_MUTATIONS: 'true'
-            ytdl_mongodb_connection_string: 'mongodb://ytdl-mongo-db:27018'
+            ytdl_mongodb_connection_string: 'mongodb://ytdl-mongo-db:27017'
             ytdl_use_local_db: 'false'
             write_ytdl_config: 'true'
         restart: always
@@ -19,7 +19,7 @@ services:
     ytdl-mongo-db:
         image: mongo
         ports:
-            - "27018:27017"
+            - "27017:27017"
         logging:
             driver: "none"          
         container_name: mongo-db