Pre-download embedding model during build to fix permissions

Dockerfile

@@ -11,14 +11,17 @@ RUN pip install --no-cache-dir -r requirements.txt
 # Step 4: Copy the rest of your application's code
 COPY . .
 
-# Step 5: Expose the port Gradio will run on
-EXPOSE 7860
-
 # Set a writable cache directory for Hugging Face models
-RUN mkdir -p /app/cache && chmod -R 777 /app/cache
 ENV HUGGING_FACE_HUB_CACHE="/app/cache"
 ENV SENTENCE_TRANSFORMERS_HOME="/app/cache"
 
+# --- THIS IS THE NEW, CRUCIAL LINE ---
+# Pre-download the model during the build process (as root)
+RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('all-MiniLM-L6-v2')"
+
+# Step 5: Expose the port Gradio will run on
+EXPOSE 7860
+
 ENV PYTHONUNBUFFERED 1
 
 # Step 6: Define the command to run your app