sudo mkdir -p /etc/docker

# 2.编写配置文件
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["http://hub-mirror.c.163.com",
    "https://docker.mirrors.ustc.edu.cn",
    "https://reg-mirror.qiniu.com"
  ]
}
EOF

# 3.重启服务
sudo systemctl daemon-reload
sudo systemctl restart docker