修改 Dockerfile，解决构建时错误

src/app/(auth)/captcha/route.ts

@@ -14,7 +14,7 @@ function generateCaptchaText(length: number = 4): string {
 }
 
 // 哈希验证码文本并使用随机盐值
-function hashCaptcha(text: string): { hash: string; salt: string } {
+function hashCaptcha(text: string): { hash: string, salt: string } {
   const salt = crypto.randomBytes(16).toString('hex')
   const hash = crypto
     .createHmac('sha256', salt)

src/app/(auth)/login/captcha.tsx

@@ -2,6 +2,7 @@ import {useCallback, useEffect, useState} from 'react'
 import {Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle} from '@/components/ui/dialog'
 import {Button} from '@/components/ui/button'
 import {Input} from '@/components/ui/input'
+import Image from 'next/image'
 
 export type CaptchaProps = {
   showCaptcha: boolean
@@ -44,7 +45,7 @@ export default function Captcha(props: CaptchaProps) {
         </DialogHeader>
         <div className="space-y-4">
           <div className="flex justify-between items-center">
-            <img
+            <Image
               src={captchaImage}
               alt="验证码"
               width={180}