fix: add explicit coolify network for Traefik routing

docker-compose.yml

@@ -8,6 +8,8 @@ services:
     environment:
       - PORT=3001
     restart: unless-stopped
+    networks:
+      - coolify
 
   frontend:
     build:
@@ -19,3 +21,9 @@ services:
     depends_on:
       - backend
     restart: unless-stopped
+    networks:
+      - coolify
+
+networks:
+  coolify:
+    external: true