白嫖Cloudflare Workers 搭建 Docker Hub镜像加速服务|

简介

基于Cloudflare Workers 搭建 Docker Hub镜像加速服务。

首先要注册一个Cloudflare账号。
Cloudflare账号下域名的一级域名，推荐万网注册个top域名，再转移到Cloudflare，很便宜的。
注意 Worker 每天每免费账号有次数限制，为10万次。每分钟为1000次。

步骤

登录到CF的仪表盘 https://dash.cloudflare.com/

点击 workers-and-pages > 创建应用程序 > 创建 Worker > 点击保存 >点击完成 > 编辑代码

编辑代码

编辑 worker.js 文件

编辑覆盖后，ctrl + s 即可保存。

import HTML from './docker.html';
export default {async fetch(request) {const url = new URL(request.url);const path = url.pathname;const originalHost = request.headers.get("host");const registryHost = "registry-1.docker.io";if (path.startsWith("/v2/")) {const headers = new Headers(request.headers);headers.set("host", registryHost);const registryUrl = `https://${registryHost}${path}`;const registryRequest = new Request(registryUrl, {method: request.method,headers: headers,body: request.body,// redirect: "manual",redirect: "follow",});const registryResponse = await fetch(registryRequest);console.log(registryResponse.status);const responseHeaders = new Headers(registryResponse.headers);responseHeaders.set("access-control-allow-origin", originalHost);responseHeaders.set("access-control-allow-headers", "Authorization");return new Response(registryResponse.body, {status: registryResponse.status,statusText: registryResponse.statusText,headers: responseHeaders,});} else {return new Response(HTML.replace(/{{host}}/g, originalHost), {status: 200,headers: {"content-type": "text/html"}});}}
}

编辑 docker.html 文件

点击新建文件，创建此文件。ctrl + s 即可保存。

<!DOCTYPE html>
<html lang="zh-CN">
<head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><title>镜像使用说明</title><style>body {font-family: 'Roboto', sans-serif;margin: 0;padding: 0;background-color: #f4f4f4;}.header {background: linear-gradient(135deg, #667eea, #764ba2);color: #fff;padding: 20px 0;text-align: center;box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);}.container {max-width: 800px;margin: 40px auto;padding: 20px;background-color: #fff;box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);border-radius: 10px;}.content {margin-bottom: 20px;}.footer {text-align: center;padding: 20px 0;background-color: #333;color: #fff;}pre {background-color: #272822;color: #f8f8f2;padding: 15px;border-radius: 5px;overflow-x: auto;}code {font-family: 'Source Code Pro', monospace;}a {color: #4CAF50;text-decoration: none;}a:hover {text-decoration: underline;}@media (max-width: 600px) {.container {margin: 20px;padding: 15px;}.header {padding: 15px 0;}}</style><link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&family=Source+Code+Pro:wght@400;700&display=swap" rel="stylesheet">
</head>
<body><div class="header"><h1>镜像使用说明</h1></div><div class="container"><div class="content"><p>为了加速镜像拉取，你可以使用以下命令设置 registry mirror:</p><pre><code>sudo tee /etc/docker/daemon.json &lt;&lt;EOF
{"registry-mirrors": ["https://{{host}}"]
}
EOF</code></pre><p>为了避免 Worker 用量耗尽，你可以手动 pull 镜像然后 re-tag 之后 push 至本地镜像仓库:</p><pre><code>docker pull {{host}}/library/alpine:latest # 拉取 library 镜像
docker pull {{host}}/coredns/coredns:latest # 拉取 coredns 镜像</code></pre></div></div><div class="footer"><p>Powered by Cloudflare Workers</p><p><a href="https://songxwn.com" target="_blank">访问博客 songxwn.com</a></p></div>
</body>
</html>