docker: 下载image时报错： failed to resolve reference "docker.io/library/":

一，报错信息

 docker-compose up -d
[+] up 1/1
 ✘ Image mysql:8.0 Error failed to resolve reference "docker.io/library/mysql:8.0": failed to authorize: failed to... 6.8s
Error response from daemon: failed to resolve reference "docker.io/library/mysql:8.0": failed to authorize: 
failed to fetch anonymous token: Get "https://auth.docker.io/token?scope=repository%3Alibrary%2Fmysql%3Apull&service=registry.docker.io": EOF

二，原因

国内网络环境导致无法连接 Docker Hub 官方镜像仓库的问题
（报错中的 failed to fetch anonymous token... EOF 说明在尝试获取 Docker 官方认证的 Token 时被网络拦截或超时了）。

三，解决:

配置当前可用的 Docker 镜像加速器:

  "registry-mirrors": [
    "https://daocloud.io",
    "https://dockerproxy.com",
    "https://1panel.live",
    "https://rat.dev"
  ]