Error response from daemon: Get "https://xx.xx.xx/v2/": x509: certificate signed by unknown authority

　　自建harbor仓库ssl证书过期之后，更换了ssl证书。jenkins流水线无法登录harbor镜像仓库、且无法拉取镜像时报，报错信息如下：Error response from daemon: Get "https://xx.xx.xx/v2/": x509: certificate signed by unknown authority

　　让docker信任harbor的CA证书

　　　mkdir　/etc/docker/certs.d/harbor.tqsys.cn -p

　　　cp ca.crt  /etc/docker/certs.d/harbor.tqsys.cn

　　最后重启docker

　　　systemctl daemon-reload

　　　systemctl restart docker