docker 镜像代理搭建
一、前因
docker拉取镜像失败，经常爆红，公共的用得不放心，关键也没几个还健在了，于是扒拉几篇教程，自己搭建一个临时使用。
二、安装
前提：有 cloudflare 账号，系统安装了 docker。
登录 cloudflare,新建worker
部署之后编辑代码，贴入以下代码
// _worker.js
// Docker镜像仓库主机地址
let hub_host = 'registry-1.docker.io';
// Docker认证服务器地址
const auth_url = 'https://auth.docker.io';
// 自定义的工作服务器地址
let workers_url = 'https://xxxxxxxxxxxxxxxxx/';
let 屏蔽爬虫UA = ['netcraft'];
// 根据主机名选择对应的上游地址
function routeByHosts(host) {
// 定义路由表
const routes = {
// 生产环境
"quay": "quay.io",
"gcr": "gcr.io",
"k8s-gcr": "k8s.gcr.io",
"k8s": "registry.k8s.io",
"ghcr": "ghcr.io",
"cloudsmith": "docker.cloudsmith.io",
"nvcr": "nvcr.io",
// 测试环境
"test": "registry-1.docker.io",
};
if (host in routes) return [ routes[host], false ];
else return [ hub_host, true ];
}
/** @type {RequestInit} */
const PREFLIGHT_INIT = {
// 预检请求配置
headers: new Headers({
'access-control-allow-origin': '*', // 允许所有来源
'access-control-allow-methods': 'GET,POST,PUT,PATCH,TRACE,DELETE,HEAD,OPTIONS', // 允许的HTTP方法
'access-control-max-age': '1728000', // 预检请求的缓存时间
}),
}
/**
* 构造响应
* @param {any} body 响应体
* @param {number} status 响应状态码
* @param {Object<string, string>} headers 响应头
*/
function makeRes(body, status = 200, headers = {}) {
headers['access-control-allow-origin'] = '*' // 允许所有来源
return new Response(body, { status, headers }) // 返回新构造的响应
}
/**
* 构造新的URL对象
* @param {string} urlStr URL字符串
*/
function newUrl(urlStr) {
try {
return new URL(urlStr) // 尝试构造新的URL对象
} catch (err) {
return null // 构造失败返回null
}
}
function isUUID(uuid) {
// 定义一个正则表达式来匹配 UUID 格式
const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[4][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
// 使用正则表达式测试 UUID 字符串
return uuidRegex.test(uuid);
}
async function nginx() {
const text = `
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
`
return text;
}
async function searchInterface() {
const text = `
<!DOCTYPE html>
<html>
<head>
<title>Docker Hub Search</title>
<style>
body {
font-family: Arial, sans-serif;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
height: 100vh;
margin: 0;
background: linear-gradient(to right, rgb(28, 143, 237), rgb(29, 99, 237));
}
.logo {
margin-bottom: 20px;
}
.search-container {
display: flex;
align-items: center;
}
#search-input {
padding: 10px;
font-size: 16px;
border: 1px solid #ddd;
border-radius: 4px;
width: 300px;
margin-right: 10px;
}
#search-button {
padding: 10px;
background-color: rgba(255, 255, 255, 0.2); /* 设置白色，透明度为10% */
border: none;
border-radius: 4px;
cursor: pointer;
width: 44px;
height: 44px;
display: flex;
align-items: center;
justify-content: center;
}
#search-button svg {
width: 24px;
height: 24px;
}
</style>
</head>
<body>
<div class="logo">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 18" fill="#ffffff" width="100" height="75">
<path d="M23.763 6.886c-.065-.053-.673-.512-1.954-.512-.32 0-.659.03-1.01.087-.248-1.703-1.651-2.533-1.716-2.57l-.345-.2-.227.328a4.596 4.596 0 0 0-.611 1.433c-.23.972-.09 1.884.403 2.666-.596.331-1.546.418-1.744.42H.752a.753.753 0 0 0-.75.749c-.007 1.456.233 2.864.692 4.07.545 1.43 1.355 2.483 2.409 3.13 1.181.725 3.104 1.14 5.276 1.14 1.016 0 2.03-.092 2.93-.266 1.417-.273 2.705-.742 3.826-1.391a10.497 10.497 0 0 0 2.61-2.14c1.252-1.42 1.998-3.005 2.553-4.408.075.003.148.005.221.005 1.371 0 2.215-.55 2.68-1.01.505-.5.685-.998.704-1.053L24 7.076l-.237-.19Z"></path>
<path d="M2.216 8.075h2.119a.186.186 0 0 0 .185-.186V6a.186.186 0 0 0-.185-.186H2.216A.186.186 0 0 0 2.031 6v1.89c0 .103.083.186.185.186Zm2.92 0h2.118a.185.185 0 0 0 .185-.186V6a.185.185 0 0 0-.185-.186H5.136A.185.185 0 0 0 4.95 6v1.89c0 .103.083.186.186.186Zm2.964 0h2.118a.186.186 0 0 0 .185-.186V6a.186.186 0 0 0-.185-.186H8.1A.185.185 0 0 0 7.914 6v1.89c0 .103.083.186.186.186Zm2.928 0h2.119a.185.185 0 0 0 .185-.186V6a.185.185 0 0 0-.185-.186h-2.119a.186.186 0 0 0-.185.186v1.89c0 .103.083.186.185.186Zm-5.892-2.72h2.118a.185.185 0 0 0 .185-.186V3.28a.186.186 0 0 0-.185-.186H5.136a.186.186 0 0 0-.186.186v1.89c0 .103.083.186.186.186Zm2.964 0h2.118a.186.186 0 0 0 .185-.186V3.28a.186.186 0 0 0-.185-.186H8.1a.186.186 0 0 0-.186.186v1.89c0 .103.083.186.186.186Zm2.928 0h2.119a.185.185 0 0 0 .185-.186V3.28a.186.186 0 0 0-.185-.186h-2.119a.186.186 0 0 0-.185.186v1.89c0 .103.083.186.185.186Zm0-2.72h2.119a.186.186 0 0 0 .185-.186V.56a.185.185 0 0 0-.185-.186h-2.119a.186.186 0 0 0-.185.186v1.89c0 .103.083.186.185.186Zm2.955 5.44h2.118a.185.185 0 0 0 .186-.186V6a.185.185 0 0 0-.186-.186h-2.118a.185.185 0 0 0-.185.186v1.89c0 .103.083.186.185.186Z"></path>
</svg>
</div>
<div class="search-container">
<input type="text" id="search-input" placeholder="Search Docker Hub">
<button id="search-button">
<svg focusable="false" aria-hidden="true" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M21 21L16.65 16.65M19 11C19 15.4183 15.4183 19 11 19C6.58172 19 3 15.4183 3 11C3 6.58172 6.58172 3 11 3C15.4183 3 19 6.58172 19 11Z" stroke="white" fill="none" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></path>
</svg>
</button>
</div>
<script>
function performSearch() {
const query = document.getElementById('search-input').value;
if (query) {
window.location.href = '/search?q=' + encodeURIComponent(query);
}
}
document.getElementById('search-button').addEventListener('click', performSearch);
document.getElementById('search-input').addEventListener('keypress', function(event) {
if (event.key === 'Enter') {
performSearch();
}
});
</script>
</body>
</html>
`;
return text;
}
export default {
async fetch(request, env, ctx) {
const getReqHeader = (key) => request.headers.get(key); // 获取请求头
let url = new URL(request.url); // 解析请求URL
const userAgentHeader = request.headers.get('User-Agent');
const userAgent = userAgentHeader ? userAgentHeader.toLowerCase() : "null";
if (env.UA) 屏蔽爬虫UA = 屏蔽爬虫UA.concat(await ADD(env.UA));
workers_url = `https://${url.hostname}`;
const pathname = url.pathname;
// 获取请求参数中的 ns
const ns = url.searchParams.get('ns');
const hostname = url.searchParams.get('hubhost') || url.hostname;
const hostTop = hostname.split('.')[0]; // 获取主机名的第一部分
let checkHost; // 在这里定义 checkHost 变量
// 如果存在 ns 参数，优先使用它来确定 hub_host
if (ns) {
if (ns === 'docker.io') {
hub_host = 'registry-1.docker.io'; // 设置上游地址为 registry-1.docker.io
} else {
hub_host = ns; // 直接使用 ns 作为 hub_host
}
} else {
checkHost = routeByHosts(hostTop);
hub_host = checkHost[0]; // 获取上游地址
}
const fakePage = checkHost ? checkHost[1] : false; // 确保 fakePage 不为 undefined
console.log(`域名头部: ${hostTop}\n反代地址: ${hub_host}\n伪装首页: ${fakePage}`);
const isUuid = isUUID(pathname.split('/')[1].split('/')[0]);
if (屏蔽爬虫UA.some(fxxk => userAgent.includes(fxxk)) && 屏蔽爬虫UA.length > 0) {
// 首页改成一个nginx伪装页
return new Response(await nginx(), {
headers: {
'Content-Type': 'text/html; charset=UTF-8',
},
});
}
const conditions = [
isUuid,
pathname.includes('/_'),
pathname.includes('/r/'),
pathname.includes('/v2/user'),
pathname.includes('/v2/orgs'),
pathname.includes('/v2/_catalog'),
pathname.includes('/v2/categories'),
pathname.includes('/v2/feature-flags'),
pathname.includes('search'),
pathname.includes('source'),
pathname === '/',
pathname === '/favicon.ico',
pathname === '/auth/profile',
];
if (conditions.some(condition => condition) && (fakePage === true || hostTop == 'docker')) {
if (env.URL302) {
return Response.redirect(env.URL302, 302);
} else if (env.URL) {
if (env.URL.toLowerCase() == 'nginx') {
//首页改成一个nginx伪装页
return new Response(await nginx(), {
headers: {
'Content-Type': 'text/html; charset=UTF-8',
},
});
} else return fetch(new Request(env.URL, request));
} else if (url.pathname == '/'){
return new Response(await searchInterface(), {
headers: {
'Content-Type': 'text/html; charset=UTF-8',
},
});
}
const newUrl = new URL("https://registry.hub.docker.com" + pathname + url.search);
// 复制原始请求的标头
const headers = new Headers(request.headers);
// 确保 Host 头部被替换为 hub.docker.com
headers.set('Host', 'registry.hub.docker.com');
const newRequest = new Request(newUrl, {
method: request.method,
headers: headers,
body: request.method !== 'GET' && request.method !== 'HEAD' ? await request.blob() : null,
redirect: 'follow'
});
return fetch(newRequest);
}
// 修改包含 %2F 和 %3A 的请求
if (!/%2F/.test(url.search) && /%3A/.test(url.toString())) {
let modifiedUrl = url.toString().replace(/%3A(?=.*?&)/, '%3Alibrary%2F');
url = new URL(modifiedUrl);
console.log(`handle_url: ${url}`);
}
// 处理token请求
if (url.pathname.includes('/token')) {
let token_parameter = {
headers: {
'Host': 'auth.docker.io',
'User-Agent': getReqHeader("User-Agent"),
'Accept': getReqHeader("Accept"),
'Accept-Language': getReqHeader("Accept-Language"),
'Accept-Encoding': getReqHeader("Accept-Encoding"),
'Connection': 'keep-alive',
'Cache-Control': 'max-age=0'
}
};
let token_url = auth_url + url.pathname + url.search;
return fetch(new Request(token_url, request), token_parameter);
}
// 修改 /v2/ 请求路径
if ( hub_host == 'registry-1.docker.io' && /^\/v2\/[^/]+\/[^/]+\/[^/]+$/.test(url.pathname) && !/^\/v2\/library/.test(url.pathname)) {
//url.pathname = url.pathname.replace(/\/v2\//, '/v2/library/');
url.pathname = '/v2/library/' + url.pathname.split('/v2/')[1];
console.log(`modified_url: ${url.pathname}`);
}
// 更改请求的主机名
url.hostname = hub_host;
// 构造请求参数
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 // 缓存时间
};
// 添加Authorization头
if (request.headers.has("Authorization")) {
parameter.headers.Authorization = getReqHeader("Authorization");
}
// 发起请求并处理响应
let original_response = await fetch(new Request(url, 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;
// 修改 Www-Authenticate 头
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));
}
// 处理重定向
if (new_response_headers.get("Location")) {
return httpHandler(request, new_response_headers.get("Location"));
}
// 返回修改后的响应
let response = new Response(original_text, {
status,
headers: new_response_headers
});
return response;
}
};
/**
* 处理HTTP请求
* @param {Request} req 请求对象
* @param {string} pathname 请求路径
*/
function httpHandler(req, pathname) {
const reqHdrRaw = req.headers;
// 处理预检请求
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
};
return proxy(urlObj, reqInit, rawLen);
}
/**
* 代理请求
* @param {URL} urlObj URL对象
* @param {RequestInit} reqInit 请求初始化对象
* @param {string} rawLen 原始长度
*/
async function proxy(urlObj, reqInit, rawLen) {
const res = await fetch(urlObj.href, reqInit);
const resHdrOld = res.headers;
const resHdrNew = new Headers(resHdrOld);
// 验证长度
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');
// 删除不必要的头
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
});
}
async function ADD(envadd) {
var addtext = envadd.replace(/[ |"'\r\n]+/g, ',').replace(/,+/g, ','); // 将空格、双引号、单引号和换行符替换为逗号
if (addtext.charAt(0) == ',') addtext = addtext.slice(1);
if (addtext.charAt(addtext.length - 1) == ',') addtext = addtext.slice(0, addtext.length - 1);
const add = addtext.split(',');
return add;
}
自定义服务器地址改成你自己要用的域名
部署成功后绑定自定义域名，域名需要在 cloudflare 中接管。
三、使用
编辑 docker 配置文件，填入自定义域名即可拉去镜像。
vi /etc/docker/daemon.json
加入以下代码
{
"registry-mirrors": ["https://xxxxxxxxxxxxx"]
}
换成自己域名
重启 docker
systemctl daemon-reload
systemctl restart docker
四、总结
网络不好的无奈之举罢了，用来中转不错。
参考项目：cmliu/CF-Workers-docker.io
