diff --git a/Dockerfile b/Dockerfile
index baa6f25..370730e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,7 @@ RUN npx tsx scripts/warmup-model.ts
 # ── Stage 2: Runtime ────────────────────────────────────────────
 FROM node:20-slim
 
-RUN groupadd -r appgroup && useradd -r -g appgroup appuser
+RUN groupadd -r appgroup && useradd -r -g appgroup -m appuser
 
 WORKDIR /app