Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown.

• 1. 问题描述
• 2. 解决方式

1. 问题描述

|组件|版本|备注|
|Ubuntu Docker Image|20.04||

使用镜像时无论是镜像默认源还是清华源、阿里源都报错

Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown.  Could not handshake: Error in the certificate verification

google了半天，该试的方法都试了，最后想到直接去 stackoverflow 查下，第一条就是

Error by trying installing docker repository on linux ubuntu 18.04 LTS

计算机使用类常规问题还是问stackoverflow要比google来的快

2. 解决方式

touch /etc/apt/apt.conf.d/99verify-peer.conf \
&& echo >>/etc/apt/apt.conf.d/99verify-peer.conf "Acquire { https::Verify-Peer false }"

原因还是网络策略问题，前端可能有代理之类的东西对https进行解密和重新加密。