修复docker网络
k3 网络被lxc搞坏了
service docker stop; pkill docker; iptables -t nat -F; ifconfig docker0 down; brctl delbr docker0; service docker startk3 网络被lxc搞坏了
service docker stop; pkill docker; iptables -t nat -F; ifconfig docker0 down; brctl delbr docker0; service docker start