Fix transformer cache issue - attempt 3

Dockerfile

@@ -1,6 +1,9 @@
 # Use Python as the base image
 FROM python:3.9
 
+# Set environment variable for cache
+ENV TRANSFORMERS_CACHE=/app/cache
+
 # Set the working directory
 WORKDIR /app
 
@@ -11,5 +14,8 @@ RUN pip install --no-cache-dir -r requirements.txt
 # Copy the FastAPI app
 COPY . .
 
+# Ensure the cache directory is writable
+RUN mkdir -p /app/cache
+
 # Run FastAPI server
 CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]