feat(docker): 安装 tzdata 并设置 TZ=Asia/Shanghai 以让 Node.js 使用上海时区

backend/saveEmail.js

@@ -42,9 +42,14 @@ async function saveEmail(stream) {
         const subject = parsed.subject || 'No Subject';
         const body = parsed.text || (parsed.html || '');
 
+        // Manually create a timestamp for 'Asia/Shanghai' timezone
+        const received_at = new Date().toLocaleString('sv-SE', {
+            timeZone: 'Asia/Shanghai'
+        });
+
         const [result] = await db.execute(
-            'INSERT INTO emails (recipient, sender, subject, body) VALUES (?, ?, ?, ?)',
-            [recipient, sender, subject, body]
+            'INSERT INTO emails (recipient, sender, subject, body, received_at) VALUES (?, ?, ?, ?, ?)',
+            [recipient, sender, subject, body, received_at]
         );
         // const [result] = await db.execute(
         //     'INSERT INTO emails (recipient, sender, subject, body, raw) VALUES (?, ?, ?, ?, ?)',