更新 Dockerfile，修复 node-canvas 字体显示问题

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

@@ -2,7 +2,6 @@ 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
@@ -45,7 +44,7 @@ export default function Captcha(props: CaptchaProps) {
         </DialogHeader>
         <div className="space-y-4">
           <div className="flex justify-between items-center">
-            <Image
+            <img
               src={captchaImage}
               alt="验证码"
               width={180}