docker登录harbor仓库时 提示：x509: certificate signed by unknown authority

[root@k8s ~]# docker login https://hub.vrgv.com

Username: admin

Password:

Error response from daemon: Get https://hub.vrgv.com/v2/: x509: certificate signed by unknown authority

解决方法：

配置文件位置
vim  /usr/lib/systemd/system/docker.service   #为启动文件，可用find / -name docker.service搜索

修改为：
ExecStart=/usr/bin/dockerd --insecure-registry hub.vrgv.com

hub.vrgv.com是自己的harbor仓库地址