优化数据库自检

server/index.js

@@ -305,15 +305,26 @@ function getCookie(req, name) {
   return matches ? decodeURIComponent(matches[1]) : undefined;
 }
 
+/**
+ * Database Initialization Check
+ */
+let isDbInitialized = false;
 async function checkDb() {
   try {
     const fs = require('fs');
-    if (!fs.existsSync(path.join(__dirname, '..', '.env'))) {
+    // In Docker or high-level environments, .env might not exist but process.env is set
+    const hasConfig = process.env.MYSQL_HOST || fs.existsSync(path.join(__dirname, '..', '.env'));
+    
+    if (!hasConfig) {
       isDbInitialized = false;
       return;
     }
+
+    // Check for essential tables
     const [rows] = await db.query("SHOW TABLES LIKE 'prometheus_sources'");
-    isDbInitialized = rows.length > 0;
+    const [rows2] = await db.query("SHOW TABLES LIKE 'site_settings'");
+    
+    isDbInitialized = rows.length > 0 && rows2.length > 0;
   } catch (err) {
     isDbInitialized = false;
   }