Update docker-compose.yml

.devcontainer/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3.9"
 
 services:
   app:
@@ -29,7 +28,7 @@ services:
       - db_data:/var/lib/mysql
       - ../docker/mysql/initdb:/docker-entrypoint-initdb.d
     ports:
-      - "3306:3306"
+      - "3307:3306"
 
 volumes:
   db_data: