Fix cache directory permission issue with explicit cache_dir

Dockerfile

@@ -4,12 +4,20 @@ FROM python:3.9-slim
 # Set the working directory inside the container
 WORKDIR /app
 
+# Set environment variables for cache
+ENV HF_HOME=/tmp/hf_cache
+ENV HUGGINGFACE_HUB_CACHE=/tmp/hf_cache
+ENV TRANSFORMERS_CACHE=/tmp/hf_cache
+
 # Copy all project files to the container
 COPY . /app
 
 # Install the required Python packages
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Create the cache directory
+RUN mkdir -p /tmp/hf_cache
+
 # Expose the port that FastAPI will run on
 EXPOSE 7860