Update Dockerfile

Dockerfile

@@ -25,7 +25,7 @@ RUN apt-get update && apt-get install -y \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /code
-RUN mkdir -p /code/uploads && chmod 755 /code/uploads
+RUN mkdir -p /code/uploads && chmod -R 777 /code/uploads
 RUN mkdir -p /code/chroma_db && chmod 755 /code/chroma_db
 
 # Copy and install Python dependencies