引言

• 由于最近國內無法正常拉取docker鏡像，然而找了幾個能用的docker鏡像源發現拉取回來的docker鏡像不是最新的版本，部署到Cloudflare里Workers 和 Pages，拉取docker 鏡像成功，故記錄部署過程。

部署服務

• 登錄Cloudflare后，進入Workers 和 Pages，再點擊概述，創建應用程序。
  
• 點擊創建，輸入名稱，然后點擊部署

• 部署成功，點擊編輯代碼
  
• 粘貼下列代碼

'use strict'
const hub_host = 'registry-1.docker.io'
const auth_url = 'https://auth.docker.io'
const workers_url = 'https://xxx自己的域名'
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',}),
}
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}
}
addEventListener('fetch', e => {const ret = fetchHandler(e).catch(err => makeRes('cfworker error:\n' + err.stack, 502))e.respondWith(ret)
})
async function fetchHandler(e) {const getReqHeader = (key) => e.request.headers.get(key);let url = new URL(e.request.url);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.searchreturn 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;
}
function httpHandler(req, pathname) {const reqHdrRaw = req.headers// preflightif (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 = pathnameconst urlObj = newUrl(urlStr)/** @type {RequestInit} */const reqInit = {method: req.method,headers: reqHdrNew,redirect: 'follow',body: req.body}return proxy(urlObj, reqInit, rawLen, 0)
}
async function proxy(urlObj, reqInit, rawLen) {const res = await fetch(urlObj.href, reqInit)const resHdrOld = res.headersconst resHdrNew = new Headers(resHdrOld)// verifyif (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.statusresHdrNew.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})
}

• 修改域名，然后點擊部署
  
• 點擊設置，觸發器，然后添加路由
  
• 設置路由，選擇域名區域
  
• 解析DNS，添加A記錄，名稱為域名前綴，IPV4：8.8.8.8即可(這里可以隨便填寫)
  

最后配置鏡像源驗證，拉取鏡像

#編輯/etc/docker/daemon.json 文件，配置過是不存在,就新建個
sudo vim /etc/docker/daemon.json
#寫入文件內容
{ "registry-mirrors":["https://xxx.域名.com"] 
}
#保存退出
wq!#重啟docker 服務
sudo  service docker restart#驗證docker 是否生效
sudo docker info|grep Mirrors -A 1#查看打印結果

拉取鏡像