feat: 修复 Docker 入口脚本中的权限设置，确保 node 用户可以写入图像目录

Author: CharyeahOwO

docker-entrypoint.sh

@@ -3,7 +3,8 @@ set -e
 
 # Fix volume permissions: ensure node user can write to images directory
 if [ -d /app/public/images ]; then
-  chown -R node:node /app/public/images 2>/dev/null || true
+  chown -R node:node /app/public/images
+  chmod -R 775 /app/public/images
 fi
 
 # Run the main process as node user