Fix docker user uid conflict

Dockerfile

@@ -28,16 +28,16 @@ WORKDIR /app
 ENV NODE_ENV=production
 ENV NEXT_TELEMETRY_DISABLED=1
 
-# Hugging Face runs containers as a non-root user (uid 1000)
-RUN adduser --system --uid 1000 nextjs
+# The node:alpine image already has a built-in 'node' user with uid 1000
+# which is perfect for Hugging Face Spaces!
 
 COPY --from=builder /app/public ./public
 
 # Automatically leverage output traces to reduce image size
-COPY --from=builder --chown=nextjs:root /app/.next/standalone ./
-COPY --from=builder --chown=nextjs:root /app/.next/static ./.next/static
+COPY --from=builder --chown=node:root /app/.next/standalone ./
+COPY --from=builder --chown=node:root /app/.next/static ./.next/static
 
-USER nextjs
+USER node
 
 # Hugging Face routes traffic to port 7860
 EXPOSE 7860