diff --git a/Dockerfile b/Dockerfile
index 88471db..7c75970 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,7 @@ RUN npm ci --omit=dev
 RUN npm install -g @anthropic-ai/claude-code
 COPY . .
 RUN mkdir -p data && chown -R node:node /app
+RUN addgroup -g 984 docker 2>/dev/null; addgroup node docker 2>/dev/null || true
 USER node
 ENV HOST=0.0.0.0
 ENV PORT=3000