Update Dockerfile

Dockerfile

@@ -13,14 +13,13 @@ RUN pip install --no-cache-dir -r requirements.txt
 
 COPY . .
 
-# --- HERE IS THE FIX ---
 # Create writable directories for the database, uploads, AND sessions
 RUN mkdir -p /app/chroma_db && chmod -R 777 /app/chroma_db
 RUN mkdir -p /app/Uploads && chmod -R 777 /app/Uploads
 RUN mkdir -p /app/flask_session && chmod -R 777 /app/flask_session
-# -----------------------
 
 EXPOSE 7860
 
-# Point to app_1.py
-CMD ["gunicorn", "-b", "0.0.0.0:7860", "app:app", "--timeout", "300"]
+# --- THE FIX IS HERE ---
+# We add "--workers 1" to force a single worker, which fixes filesystem session bugs.
+CMD ["gunicorn", "--workers", "1", "-b", "0.0.0.0:7860", "app_1:app", "--timeout", "300"]