问题

一、docker 拉取不到镜像的问题：拉取超时

现象：

ERROR: error pulling image configuration: download failed after attempts=6: dial tcp 162.125.32.5:443: i/o timeout

解决方案：

1. 首先设置国内的镜像源：复制下面直接执行

$sudo mkdir -p /etc/docker
$sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": [
    "https://xxydoxjt.mirror.aliyuncs.com",
    "https://registry.docker-cn.com",
    "https://docker.mirrors.ustc.edu.cn",
    "http://hub-mirror.c.163.com",
    "https://mirror.baidubce.com",
    "https://mirror.ccs.tencentyun.com"
  ]
}
EOF

2. 重启 Docker 服务

$sudo systemctl daemon-reload
$sudo systemctl restart docker