fix permission issue on docker

Dockerfile

@@ -22,8 +22,9 @@ RUN pip install --no-cache-dir -r requirements.txt
 COPY . .
 
 # Create necessary directories and set permissions
-RUN mkdir -p /app/uploads /app/static/uploads && \
-    chown -R celery:celery /app
+RUN mkdir -p /app/uploads/rooms /app/static/uploads && \
+    chown -R celery:celery /app && \
+    chmod -R 755 /app/uploads
 
 # Create and set up startup script
 RUN echo '#!/bin/bash\n\

routes/room_files.py

@@ -35,7 +35,7 @@ from utils import log_event, create_notification, get_unread_count
 room_files_bp = Blueprint('room_files', __name__, url_prefix='/api/rooms')
 
 # Root directory for storing room files
-DATA_ROOT = '/data/rooms'  # This should be a Docker volume
+DATA_ROOT = '/app/uploads/rooms'  # Updated to match Docker volume mount point
 
 # Set of allowed file extensions for upload
 ALLOWED_EXTENSIONS = {