docker中apt-get失败ERROR1ERROR2ERROR3
docker中无法联网导致apt-get失败ERROR解决方法ERROR使用apt-get update更新失败, 报错：Err:19 http://archive.ubuntu.com/ubuntu bionic/main amd64 libpcre3-dev amd64 2:8.39-9 Temporary failure resolving 'archive.ubuntu.com'Err:20 http://archive.ubuntu.com/ubuntu bionic/main am
