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之前为小伙伴们提供了 Docker 镜像拉取问题的解决方案,但使用 Render 平台时出现了无法拉取部署镜像问题,Distribution Registry 又需要自行采购境外主机。本文介绍如何借助 Cloudflare 解决 Docker 镜像拉取问题。

写在前面

之前分享了如何使用 Render 平台解决 Docker 镜像拉取的问题,但 Render 平台限制了该服务部署,无法继续白嫖。

后来又分享了如何通过自行部署 Distribution Registry 解决 Docker 镜像拉取问题,但不少小伙伴留言哭穷,还是希望可以通过白嫖的方式解决该问题。

其实不少的博主都分享了如何通过 CF 的 Workers 解决镜像拉取问题,杜老师也试了一下,非常好用,就整理了一份部署教程,分享给需要的小伙伴们!

因为需通过 CF 实现,所以要准备一个可以托管到 CF 的域名。有人推荐使用 eu.org 的免费域名,但杜老师试了申请好多次都没有成功,可以点击 这里 领取一个免费的 TOP 域名「找不到领取页面可在评论区留言」

部署过程

CF 账号申请过程和域名托管步骤这里就不说了,在页面左侧找到 Workers——概述,点创建 Worker:

项目名称可自定义,也可使用 CF 自动生成的,点击右下角处部署:

待看到项目部署成功页面后,点击右上角的编辑代码:

将部署代码区域的内容调整后粘贴到页面中的代码区域,然后点击右上角的部署按钮:

返回项目页面,点击设置,切换到触发器,我们添加一个路由。这里以 docker.birdteam.net 为例,区域则选择顶级域,最后点击右下角处添加路由:

切换到域名 DNS 记录页面,添加一个 A 类记录,主机名填写 docker,记录值可随意填写。注意务必开启代理状态,保存即可:

部署代码

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let hub_host = 'registry-1.docker.io'
const auth_url = 'https://auth.docker.io'
let workers_url = 'https://docker.birdteam.net'
let UA = ['netcraft'];
function routeByHosts(host) {
const routes = {
"quay": "quay.io",
"gcr": "gcr.io",
"k8s-gcr": "k8s.gcr.io",
"k8s": "registry.k8s.io",
"ghcr": "ghcr.io",
"cloudsmith": "docker.cloudsmith.io",
"test": "registry-1.docker.io",
};
if (host in routes) return [ routes[host], false ];
else return [ hub_host, true ];
}
const PREFLIGHT_INIT = {
headers: new Headers({
'access-control-allow-origin': '*',
'access-control-allow-methods': 'GET,POST,PUT,PATCH,TRACE,DELETE,HEAD,OPTIONS',
'access-control-max-age': '1728000',
}),
}
function makeRes(body, status = 200, headers = {}) {
headers['access-control-allow-origin'] = '*'
return new Response(body, { status, headers })
}
function newUrl(urlStr) {
try {
return new URL(urlStr)
} catch (err) {
return null
}
}
function isUUID(uuid) {
const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[4][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
return uuidRegex.test(uuid);
}
async function nginx() {
const text = `
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
`
return text ;
}
export default {
async fetch(request, env, ctx) {
const getReqHeader = (key) => request.headers.get(key);
let url = new URL(request.url);
const userAgentHeader = request.headers.get('User-Agent');
const userAgent = userAgentHeader ? userAgentHeader.toLowerCase() : "null";
if (env.UA) UA = UA.concat(await ADD(env.UA));
workers_url = `https://${url.hostname}`;
const pathname = url.pathname;
const hostname = url.searchParams.get('hubhost') || url.hostname;
const hostTop = hostname.split('.')[0];
const checkHost = routeByHosts(hostTop);
hub_host = checkHost[0];
const fakePage = checkHost[1];
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 (UA.some(fxxk => userAgent.includes(fxxk)) && UA.length > 0){
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'){
return new Response(await nginx(), {
headers: {
'Content-Type': 'text/html; charset=UTF-8',
},
});
} else return fetch(new Request(env.URL, request));
}
const newUrl = new URL("https://registry.hub.docker.com" + pathname + url.search);
const headers = new Headers(request.headers);
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);
}
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: ${url}`)
}
if (url.pathname.includes('/token')) {
let token_parameter = {
headers: {
'Host': 'auth.docker.io',
'User-Agent': getReqHeader("User-Agent"),
'Accept': getReqHeader("Accept"),
'Accept-Language': getReqHeader("Accept-Language"),
'Accept-Encoding': getReqHeader("Accept-Encoding"),
'Connection': 'keep-alive',
'Cache-Control': 'max-age=0'
}
};
let token_url = auth_url + url.pathname + url.search
return fetch(new Request(token_url, request), token_parameter)
}
if (/^\/v2\/[^/]+\/[^/]+\/[^/]+$/.test(url.pathname) && !/^\/v2\/library/.test(url.pathname)) {
url.pathname = url.pathname.replace(/\/v2\//, '/v2/library/');
console.log(`modified_url: ${url.pathname}`)
}
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 (request.headers.has("Authorization")) {
parameter.headers.Authorization = getReqHeader("Authorization");
}
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;
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(request, new_response_headers.get("Location"))
}
let response = new Response(original_text, {
status,
headers: new_response_headers
})
return response;
}
};
function httpHandler(req, pathname) {
const reqHdrRaw = req.headers
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)
const reqInit = {
method: req.method,
headers: reqHdrNew,
redirect: 'follow',
body: req.body
}
return proxy(urlObj, reqInit, rawLen)
}
async function proxy(urlObj, reqInit, rawLen) {
const res = await fetch(urlObj.href, reqInit)
const resHdrOld = res.headers
const resHdrNew = new Headers(resHdrOld)
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
})
}
async function ADD(envadd) {
var addtext = envadd.replace(/[ |"'\r\n]+/g, ',').replace(/,+/g, ',');
//console.log(addtext);
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(',');
//console.log(add);
return add ;
}

注意:在粘贴前,需要调整第三行的代码,将 docker.birdteam.net 改为您的域名。

分享地址

以下是网友们分享的 Docker 镜像地址,未做任何安全性检测和验证,使用前请自行斟酌,并根据实际需求进行必要的安全审查。本列表中的任何服务都不做任何形式的安全承诺或保证:

编号地址
1https://docker.registry.cyou
2https://docker-cf.registry.cyou
3https://docker.jsdelivr.fyi
4https://dockercf.jsdelivr.fyi
5https://dockertest.jsdelivr.fyi
6https://dockerpull.com
7https://dockerproxy.cn
8https://hub.uuuadc.top
9https://docker.1panel.live
10https://hub.rat.dev
11https://docker.anyhub.us.kg
12https://docker.chenby.cn
13https://dockerhub.jobcher.com
14https://dockerhub.icu
15https://docker.ckyl.me
16https://docker.awsl9527.cn
17https://docker.hpcloud.cloud
18https://docker.m.daocloud.io

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