update Dockerfile

Dockerfile

@@ -1,4 +1,3 @@
-
 # Use official slim Python image
 FROM python:3.8-slim
 
@@ -14,5 +13,9 @@ RUN pip install -r requirements.txt
 # Expose port used by HF Spaces Docker (default 7860)
 EXPOSE 7860
 
+# Set environment variables for Hugging Face cache
+ENV TRANSFORMERS_CACHE=/tmp/huggingface/transformers
+ENV HF_HOME=/tmp/huggingface
+
 # Start the Flask app
 CMD ["python", "app.py"]