报错：创建nginx镜像时出现报错

[root@server1 nginx]# vim /etc/sysctl.conf

在最后一段添加net.ipv4.ip_forward=1

[root@server1 nginx]# sysctl -p

net.ipv4.ip_forward = 1

[root@server1 nginx]# service network restart   重启网卡

[root@server1 nginx]# systemctl restart docker   重启docker