Reduce number of seeded users for faster start

examples/fullstack/compose.override.yml

@@ -4,7 +4,6 @@ services:
     build:
       context: backend
       target: develop
-    env_file: ./backend/.env
     volumes:
       - ./backend:/app
       - node_modules:/app/node_modules
@@ -12,4 +11,4 @@ services:
       db:
         condition: service_healthy
 volumes:
-  node_modules: {}
+  node_modules: {}