update dockerfile

Dockerfile

@@ -16,12 +16,12 @@ ENV PATH="/home/user/.local/bin:$PATH"
 WORKDIR /app
 
 # Copy backend requirements
-COPY backend/requirements.txt /app/requirements.txt
+COPY --chown=user backend/requirements.txt /app/requirements.txt
 RUN pip install --no-cache-dir --upgrade -r /app/requirements.txt
 
 # Copy backend and frontend
-COPY backend/ /app/backend/
-COPY frontend/ /app/frontend/
+COPY --chown=user backend/ /app/backend/
+COPY --chown=user frontend/ /app/frontend/
 
 # Build frontend
 WORKDIR /app/frontend