白嫖 Cloudflare Workers 自建 docker 镜像加速器

加班996免费资源 2024-06-30 511℃ 0 1

长期以来 DockerHub 域名被污染限速，所以博主一直在使用国内的镜像，但自从2024年5月末开始，国内所有 Docker 镜像服务均被迫下架，涵盖了阿里云镜像服务、上海交通大学镜像服务等，没办法了，只能建立自己的镜像使用了。

创建自己的镜像

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

填入下面的代码

const HTML = `
<!DOCTYPE html>
<html lang="zh-CN">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>Dockerhub镜像加速说明</title>
 <style>
     body {
         font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
         line-height: 1.6;
         color: #333;
         margin: 0;
         padding: 20px;
         background-image: url('https://cdn.jsdelivr.net/gh/fireinrain/picx-images-hosting@master/20240608/wp8114669-docker-wallpapers.5h6dvj56isg0.webp'); /* Replace with your image path */
         background-size: cover;
         background-position: center;
         background-repeat: no-repeat;
         background-attachment: fixed;
     }
     .container {
         max-width: 800px;
         margin: 0 auto;
         padding: 20px;
         background: rgba(255, 255, 255, 0.8);
         border-radius: 8px;
         box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
     }
     h1 {
         font-size: 2em;
         margin-bottom: 0.5em;
         color: #007aff;
     }
     p {
         margin-bottom: 1em;
     }
     pre {
         background: #2d2d2d;
         color: #f8f8f2;
         padding: 20px;
         border-radius: 8px;
         overflow-x: auto;
         position: relative;
     }
     pre::before {
         content: " ";
         display: block;
         position: absolute;
         top: 10px;
         left: 10px;
         width: 12px;
         height: 12px;
         background: #ff5f56;
         border-radius: 50%;
         box-shadow: 20px 0 0 #ffbd2e, 40px 0 0 #27c93f;
     }
     code {
         font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
         font-size: 0.875em;
     }
     .copy-button {
         position: absolute;
         top: 10px;
         right: 10px;
         background: #007aff;
         color: white;
         border: none;
         padding: 5px 10px;
         border-radius: 5px;
         cursor: pointer;
         opacity: 0;
         transition: opacity 0.3s;
     }
     pre:hover .copy-button {
         opacity: 1;
     }
</style>
</head>
<body>
 <div class="container">
     <center><h1>镜像加速说明</h1></center>
     <h3>为了加速镜像拉取，你可以使用以下命令设置 registry mirror:</h3>
     <pre><code>
sudo tee /etc/docker/daemon.json &lt;&lt;EOF
{
 "registry-mirrors": ["https://docker.yourdomain.workers.dev"]
}
EOF</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>
     <h3>用法:</h3>
     <p>原拉取镜像命令</p>
     <pre><code>
docker pull library/alpine:latest</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>
     <h3>加速拉取镜像命令</h3>
     <pre><code>
docker pull 你的域名/library/alpine:latest</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>
 </div>
 <script>
     function copyCode(button) {
         const code = button.previousSibling;
         const textArea = document.createElement('textarea');
         textArea.value = code.textContent;
         document.body.appendChild(textArea);
         textArea.select();
         document.execCommand('copy');
         document.body.removeChild(textArea);
         button.textContent = '已复制';
         setTimeout(() => {
             button.textContent = '复制代码';
         }, 2000);
     }
</script>
</body>
</html>
`;

async function handleRequest(request) {
  const url = new URL(request.url);

  // Redirect to HTTPS if the request is not secure
  if (url.protocol !== "https:") {
   url.protocol = "https:";
   return Response.redirect(url.toString(), 301);
  }

  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: "follow",
   });

   const registryResponse = await fetch(registryRequest);

   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 {
   // Replace docker.yourdomain.workers.dev with the current visiting domain
   const replacedHTML = HTML.replaceAll('docker.yourdomain.workers.dev', originalHost);
   
   // Remove background-image from btn-copy buttons
   const modifiedHTML = replacedHTML.replace(/background-image:\s*url\(.*?\)/g, '');

   return new Response(modifiedHTML, {
       status: 200,
       headers: {
           "content-type": "text/html"
       }
   });
  }
}

addEventListener("fetch", event => {
  event.respondWith(handleRequest(event.request));
});

然后点右上角蓝色按钮 Deploy（以后可能会变成其他地方或者颜色）部署即可。

现在就可以测试使用了。

docker pull docker.yourdomain.workers.dev/library/nginx

使用自己的域名以便国内访问。

因为 Workers 默认域名被污染了，国内无法使用，所以还得使用自己的域名，建议去搞数字.xyz，10年才几十块
然后就是绑定域名到 Cloudflare ，这不是本文重点。
接着是新增路由。

验证

docker pull yourdomain/library/nginx

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白嫖 Cloudflare Workers 自建 docker 镜像加速器

创建自己的镜像

使用自己的域名以便国内访问。

验证

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