Update Dockerfile

Dockerfile

@@ -3,8 +3,8 @@
 # ──────────────────────────────────────────────
 FROM node:20-slim
 
-# HF Spaces runs containers as uid 1000
-RUN useradd -m -u 1000 appuser
+# node:20-slim already has a built-in 'node' user at uid 1000
+# DO NOT run useradd — uid 1000 already exists and will error
 
 WORKDIR /app
 
@@ -12,17 +12,18 @@ WORKDIR /app
 COPY package.json ./
 RUN npm install --omit=dev
 
-# Copy application source
-COPY --chown=appuser:appuser . .
+# Copy application source with correct ownership
+COPY --chown=node:node . .
 
 # Hugging Face Spaces requires port 7860
 ENV PORT=7860
 EXPOSE 7860
 
-USER appuser
+# Use the built-in node user (uid 1000) — required by HF Spaces
+USER node
 
 # HF pings /system to verify the app is healthy
 HEALTHCHECK --interval=30s --timeout=10s --start-period=20s \
   CMD node -e "require('http').get('http://localhost:7860/system',r=>{process.exit(r.statusCode===200?0:1)}).on('error',()=>process.exit(1))"
 
-CMD ["node", "index.js"]
+CMD ["node", "index.js"]