一、pull文件时访问不了外网

• 现象:无法访问外网

[root@VM_0_17_centos ~]# ping -c 3 114.114.114.114
PING 114.114.114.114 (114.114.114.114) 56(84) bytes of data.

--- 114.114.114.114 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2001ms

• 解决办法：内网镜像配置

# 腾讯云内网镜像仓库（不需要公网）
cat > /etc/docker/daemon.json <<EOF
{
  "registry-mirrors": ["https://mirror.ccs.tencentyun.com"]
}
EOF

systemctl restart docker