aceleração de imagem do hub docker

acelerador	endereço
Docker China	https://registry.docker-cn.com
Azure China	https://dockerhub.azk8s.cn
Universidade de Ciência e Tecnologia da China	https://docker.mirrors.ustc.edu.cn
netease	https://hub-mirror.c.163.com
Tencent	https://mirror.ccs.tencentyun.com
Todos	https://【sua chave】.mirror.aliyuncs.com

Modifique /etc/docker/daemon.json

# 没有/etc/docker/daemon.json的话要先自行创建
sudo vi /etc/docker/daemon.json

# 修改registry-mirrors，举例：
"registry-mirrors": [
        "https://【你的key】.mirror.aliyuncs.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://registry.docker-cn.com"
    ]

# 重启使生效
sudo systemctl daemon-reload
sudo systemctl restart docker
# 检查镜像
docker info # 查看mirrors有无

# 如果docker info出现permission denied情况，按以下处理，否则镜像加速已完成，不用看下面
# 将用户加入docker组
su root
sudo groupadd docker
sudo gpasswd -a 【你的系统用户名】 docker
# 更新
newgrp docker
# 重启
sudo reboot