群晖使用自建镜像反代域名拉取docker镜像

首先建立反代网站，应该有不少教程，我是在cf的work里弄的
cf workers自建域名等自己摸索
主要是将将 worker.js 的内容替换为下面内容

'use strict'

const hub_host = 'registry-1.docker.io'
const auth_url = 'https://auth.docker.io'
const workers_url = 'https://你的域名'
//const home_page_url = '远程html链接'

/** @type {RequestInit} */
const PREFLIGHT_INIT = {
    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
    }
}


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


/**
 * @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
    }
    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 registry mirror:</h3>
        <pre><code>
sudo tee /etc/docker/daemon.json &lt;&lt;EOF
{
    "registry-mirrors": ["https://你的域名"]
}
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>
`

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'use strict'

const hub_host = 'registry-1.docker.io'

const auth_url = 'https://auth.docker.io'

const workers_url = 'https://你的域名'

//const home_page_url = '远程html链接'

/** @type {RequestInit} */

const PREFLIGHT_INIT = {

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

}

addEventListener('fetch', e => {

const ret = fetchHandler(e)

.catch(err => makeRes('cfworker error:\n' + err.stack, 502))

e.respondWith(ret)

})

/**

* @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

}

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>

<head>

<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>

<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>

sudo tee /etc/docker/daemon.json <<EOF

{

"registry-mirrors": ["https://你的域名"]

}

EOF</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>

<p>原拉取镜像命令</p>

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>

docker pull 你的域名/library/alpine:latest</code><button class="copy-button" onclick="copyCode(this)">复制代码</button></pre>

</div>

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>

然后进入群晖的container Manager–注册表，设置，https://index.docker.io/ 启用注册表镜像URL这里填入反代网站地址，勾选“信任的SSL自我签署证书”

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