docker: Error response from daemon: Get “https://registry-1.docker.io/v2/“: context deadline exceede
问题原因：镜像加速问题
解决方案：
mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": [
"http://hub-mirror.c.163.com",
"https://mirrors.tuna.tsinghua.edu.cn",
"http://mirrors.sohu.com",
"https://ustc-edu-cn.mirror.aliyuncs.com",
"https://ccr.ccs.tencentyun.com",
"https://docker.m.daocloud.io",
"https://docker.awsl9527.cn"
]
}
EOF
systemctl daemon-reload
systemctl restart docker
