在用virtualBox安装的Ubuntu上运行docker容器，在容器中使用apt-get update一直报错，
Err:1 http://security.ubuntu.com/ubuntu xenial-security InRelease Temporary failure resolving 'security.ubuntu.com' Err:2 http://archive.ubuntu.com/ubuntu xenial InRelease Temporary failure resolving 'archive.ubuntu.com' Err:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease Temporary failure resolving 'archive.ubuntu.com' Err:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease Temporary failure resolving 'archive.ubuntu.com'
在网上找了很多解决方案都没成功，自己最后通过查看Ubuntu虚拟机网络中DNS，将DNS配置到Docker 中/etc/resolv.conf文件中，成功运行apt-get update
查看cat /etc/resolv.conf配置文件
cat /etc/resolv.conf
查看Ubuntu虚拟机上system网络中的DNS
将该DNS写入到docker运行容器中DNS文件
echo "nameserver 150.236.34.180" | tee /etc/resolv.conf > /dev/null root@29031ce31df6:/# cat /etc/resolv.conf nameserver 150.236.34.180
运行apt-get update
apt-get update原文链接：https://www.f2er.com/ubuntu/350637.html
