Update Dockerfile

Dockerfile

@@ -22,9 +22,11 @@ RUN pip install --upgrade pip && pip install --no-cache-dir -r requirements.txt
 # Keep image focused on API serving for HF Spaces.
 COPY backend ./backend
 COPY simulation ./simulation
+COPY start_hf_services.sh ./start_hf_services.sh
 
 RUN mkdir -p /app/backend/uploads /app/backend/reports
+RUN chmod +x /app/start_hf_services.sh
 
 EXPOSE 7860
 
-CMD ["sh", "-c", "cd /app/backend && uvicorn app.main:app --host 0.0.0.0 --port ${PORT}"]
+CMD ["/app/start_hf_services.sh"]