fix: add cgroup host mode to compose for cgroup v2 compatibility

Co-Authored-By: Claude <noreply@anthropic.com>

Author: koki-develop

compose.yml

@@ -4,6 +4,7 @@ services:
       context: .
       dockerfile: Dockerfile
     privileged: true
+    cgroup: host
     command: ["serve", "--run-timeout", "10", "--compile-timeout", "10"]
     ports:
       - "8080:8080"