Docker中apt-update遇到Temporary failure resolving ‘deb.debian.org‘的解决方法_temporary failure resolving 'deb.debian.org

问题描述

最近运行一个docker服务，结果在apt-get update的时候出现了如下异常，换了sources.list中的源后也还是没有效果。

Err:1 http://deb.debian.org/debian buster/main amd64 perl-base amd64 5.28.1-6+deb10u1
  Temporary failure resolving 'deb.debian.org'
Ign:2 http://deb.debian.org/debian buster/main amd64 apt amd64 1.8.2.3
Err:3 http://deb.debian.org/debian buster/main amd64 libestr0 amd64 0.1.10-2.1
  Temporary failure resolving 'deb.debian.org'
Err:4 http://deb.debian.org/debian buster/main amd64 libfastjson4 amd64 0.99.8-2
  Temporary failure resolving 'deb.debian.org'
Err:5 http://deb.debian.org/debian buster/main amd64 
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