【Docker加速】利用cloudflare创建Docker加速拉取镜像

2024-7-1
注意: 本文最后更新于 155 天前，内容可能已不再准确，请酌情参考。

前言

因为某些原因,Docker拉取镜像失败了，所以在此教大家利用cloudflare来搭建docekr加速，方便拉取镜像。教程最后还带有各类系统或者容器管理工具修改方法。

创建cloudflare帐号并配置域名DNS

可以参考下方文章，进行创建和配置域名的DNS，如果你已经OK了那我们继续下一步

20240629233300340353
【Cloudflare】注册Cloudflare帐号并绑定域名更改DNS设置
注意: 本文最后更新于 155 天前，内容可能已不再准确，请酌情参考。前言 Cloudflare 是互联网上最大的网络之一，因为其有免费白嫖的CDN所以一般都拿来套CDN，……

配置Workers

  1. 首先我们点击左侧的Workers 和 Pages，然后如图所示，点击创建Workers
    20240701210118122235
  2. 跳转设置项目名，一般来说默认就行，你要自定义也行。设置好后记得点击保存，再点击完成即可
    20240701220026690654
  3. 然后就会出现成功！您的项目已部署到以下区域：全球，点击右侧的编辑代码。
    20240701210418577533
  4. 跳转编辑代码的页面，我们将原有的代码全选，删除，复制下面的代码，黏贴到里面。黏贴完毕后我们可以按键盘的Shift+S,保存代码，然后点击右上角的部署，要出现最下面绿色的提示：版本已保存，才可以噢！（请注意，下面的代码里你需要把https://xxx.xxx.xxx 替换为你的域名，如果你一开始创建cloudflare并绑定的域名是xx.xx，你打算设置你的docker加速地址的二级是，docker.xx.xx,那你下面let workers_url = 'https://xxx.xxx.xxx'; 这里就需要替换为：let workers_url = 'https://docker.xx.xx'; 
    'use strict'

const hub_host = 'registry-1.docker.io';
const auth_url = 'https://auth.docker.io';
let workers_url = 'https://xxx.xxx.xxx'; //#此处填写您的域名


/** @type {RequestInit} */
const PREFLIGHT_INIT = {
    // @ts-ignore
    status: 204,
    headers: new Headers({
        'access-control-allow-origin': '*',
        'access-control-allow-methods': 'GET,POST,PUT,PATCH,TRACE,DELETE,HEAD,OPTIONS',
        'access-control-max-age': '1728000',
    }),
}

/**
 * @param {any} body
 * @param {number} status
 * @param {Object<string, string>} headers
 */
function makeRes(body, status = 200, headers = {}) {
    headers['access-control-allow-origin'] = '*'
    return new Response(body, {status, headers})
}


/**
 * @param {string} urlStr
 */
function newUrl(urlStr) {
    try {
        return new URL(urlStr)
    } catch (err) {
        return null
    }
}



/**
 * @param {FetchEvent} e
 */
async function fetchHandler(e) {
    const getReqHeader = (key) => e.request.headers.get(key);

    let url = new URL(e.request.url);

    if (url.pathname === '/') {
        // Fetch and return the home page HTML content
        //return fetch(home_page_url);
        return new Response(indexHtml, {
            headers: {
              'Content-Type': 'text/html'
            }
          });
    }

    if (url.pathname === '/token') {
        let token_parameter = {
            headers: {
                'Host': 'auth.docker.io',
                'User-Agent': getReqHeader("User-Agent"),
                'Accept': getReqHeader("Accept"),
                'Accept-Language': getReqHeader("Accept-Language"),
                'Accept-Encoding': getReqHeader("Accept-Encoding"),
                'Connection': 'keep-alive',
                'Cache-Control': 'max-age=0'
            }
        };
        let token_url = auth_url + url.pathname + url.search
        return fetch(new Request(token_url, e.request), token_parameter)
    }

    url.hostname = hub_host;

    let parameter = {
        headers: {
            'Host': hub_host,
            'User-Agent': getReqHeader("User-Agent"),
            'Accept': getReqHeader("Accept"),
            'Accept-Language': getReqHeader("Accept-Language"),
            'Accept-Encoding': getReqHeader("Accept-Encoding"),
            'Connection': 'keep-alive',
            'Cache-Control': 'max-age=0'
        },
        cacheTtl: 3600
    };

    if (e.request.headers.has("Authorization")) {
        parameter.headers.Authorization = getReqHeader("Authorization");
    }

    let original_response = await fetch(new Request(url, e.request), parameter)
    let original_response_clone = original_response.clone();
    let original_text = original_response_clone.body;
    let response_headers = original_response.headers;
    let new_response_headers = new Headers(response_headers);
    let status = original_response.status;

    if (new_response_headers.get("Www-Authenticate")) {
        let auth = new_response_headers.get("Www-Authenticate");
        let re = new RegExp(auth_url, 'g');
        new_response_headers.set("Www-Authenticate", response_headers.get("Www-Authenticate").replace(re, workers_url));
    }

    if (new_response_headers.get("Location")) {
        return httpHandler(e.request, new_response_headers.get("Location"))
    }

    let response = new Response(original_text, {
        status,
        headers: new_response_headers
    })
    return response;

}


/**
 * @param {Request} req
 * @param {string} pathname
 */
function httpHandler(req, pathname) {
    const reqHdrRaw = req.headers

    // preflight
    if (req.method === 'OPTIONS' &&
        reqHdrRaw.has('access-control-request-headers')
    ) {
        return new Response(null, PREFLIGHT_INIT)
    }

    let rawLen = ''

    const reqHdrNew = new Headers(reqHdrRaw)

    const refer = reqHdrNew.get('referer')

    let urlStr = pathname

    const urlObj = newUrl(urlStr)

    /** @type {RequestInit} */
    const reqInit = {
        method: req.method,
        headers: reqHdrNew,
        redirect: 'follow',
        body: req.body
    }
    // @ts-ignore
    return proxy(urlObj, reqInit, rawLen, 0)
}


/**
 *
 * @param {URL} urlObj
 * @param {RequestInit} reqInit
 */
async function proxy(urlObj, reqInit, rawLen) {
    const res = await fetch(urlObj.href, reqInit)
    const resHdrOld = res.headers
    const resHdrNew = new Headers(resHdrOld)

    // verify
    if (rawLen) {
        const newLen = resHdrOld.get('content-length') || ''
        const badLen = (rawLen !== newLen)

        if (badLen) {
            return makeRes(res.body, 400, {
                '--error': `bad len: ${newLen}, except: ${rawLen}`,
                'access-control-expose-headers': '--error',
            })
        }
    }
    const status = res.status
    resHdrNew.set('access-control-expose-headers', '*')
    resHdrNew.set('access-control-allow-origin', '*')
    resHdrNew.set('Cache-Control', 'max-age=1500')

    resHdrNew.delete('content-security-policy')
    resHdrNew.delete('content-security-policy-report-only')
    resHdrNew.delete('clear-site-data')

    return new Response(res.body, {
        status,
        headers: resHdrNew
    })
}

const indexHtml = `
<!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（如果没有文件夹可以先创建，有则跳过，当然创建也不受影响）:</h3>
        <pre><code>
sudo mkdir -p /etc/docker</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>
        <h3>使用下面命令更改加速地址</h3>
       <pre><code>
sudo tee /etc/docker/daemon.json <<EOF
{
    "registry-mirrors": ["${workers_url}"]
}
EOF</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>
        <h3>使用下面命令重新加载配置文件，并生效</h3>
        <pre><code>
sudo systemctl daemon-reload</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>
        <h3>使用下面命令重启Docker服务，您的所有容器都会重新启动</h3>
        <pre><code>
sudo systemctl restart docker</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>      
        <h3>用法:</h3>
        <h3>原拉取镜像命令</h3>
        <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 ${workers_url.replace(/^https?:\/\//, '')}/library/alpine:latest</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>
        <h3>相关其他类型docker修改加速地址，例如（群晖,宝塔等）访问：<a href="https://lmu5.com/docker-1.html" target="_blank">落幕屋</a></h>
    </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>
`.replace(/{{host}}/g, workers_url);

addEventListener('fetch', e => {
    const ret = fetchHandler(e)
        .catch(err => makeRes('cfworker error:\n' + err.stack, 502));
    e.respondWith(ret);
});

20240701220843122495
  1. 上述完毕后点击左上角返回，点击设置--触发器--在添加自定义域那里填写你需要展示的二级域名，你上面的代码内设置的多少这里就设置多少就行了。比如你上面设置的是https://docekr.xx.xx 那你这里就填写docker.xx.xx点击添加自定义域即可。
    20240701221805181588
    20240701221854455116
  2. 最终我们点击连接，就可以看到成品页面了。（配置修改完毕后要重启容器生效，后续拉取就不需要带加速地址了）
    20240701222104052340

各类容器管理修改

  • Centos或者Ubuntu等Linux操作系统
    按照成品页面的操作步骤操作即可
  • 1panel
    20240701223059127933
  • 老宝塔
    20240701222652792581
  • 新宝塔
    20240701223935631426
  • openwrt/iStoreos内置docker
    20240701224200739864
  • 群晖
    打开Container Manager点击左边的注册表找到上面的设置，出现弹窗，选择第3个docker hub（V1）,点击上面的编辑，再次出现弹窗，启用注册表镜像打勾，填写你搭建的cloudflare Workers搭建的Docker加速地址。应用即可

    20240627211328526859
阅读剩余
版权声明：
作者：落幕
链接：https://lmu5.com/docker-1.html
文章版权归作者所有，未经允许请勿转载。
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