以下三个镜像站背靠较大的开源项目，优先推荐

为爱发电：https://dockerpull.cn/

配置daemon.json

nano /etc/docker/daemon.json

daemon.json

{
    "log-driver": "json-file",
    "log-opts": {
        "max-size": "20m",
        "max-file": "3"
    },
    "ipv6": true,
    "fixed-cidr-v6": "fd00:dead:beef:c0::/80",
    "experimental":true,
    "ip6tables":true,
    "registry-mirrors": [
        "https://docker.1panel.live",
        "https://docker.m.daocloud.io",
        "https://hub.rat.dev",
        "https://dockerpull.cn/"
    ]
}

重启docker

sudo service docker restart