diff --git a/start.sh b/start.sh
index 6de1962..43d34cf 100644
--- a/start.sh
+++ b/start.sh
@@ -1,8 +1,16 @@
-#!/bin/bash
+#!/bin/sh
 set -e
 
-# 启动 Node.js 后端
-node server.js &
+# 自动找到 server 的入口文件
+ENTRY_FILE=$(find /app/server -type f -name 'index.js' -o -name 'app.js' | head -n 1)
 
-# 启动 Nginx（前台模式）
-nginx -g 'daemon off;'
\ No newline at end of file
+if [ -z "$ENTRY_FILE" ]; then
+  echo "No server entry file found in /app/server!"
+  exit 1
+fi
+
+echo "Starting Node.js backend: $ENTRY_FILE"
+node $ENTRY_FILE &
+
+echo "Starting Nginx..."
+nginx -g 'daemon off;'