Fix volume overwrite issue with Composer dependencies

docker-compose.yml

@@ -23,6 +23,7 @@ services:
         condition: service_healthy
     volumes:
       - ./laravel:/var/www/html
+      - vendor_data:/var/www/html/vendor
     environment:
       - DB_HOST=mysql
       - DB_PORT=3306
@@ -52,3 +53,4 @@ services:
 
 volumes:
   mysql-data:
+  vendor_data: