1、登录Docker Hub

需要科学上网
https://hub.docker.com/
如果没有账户，需要先注册一个。登录命令如下：

docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.

Username: your_name
Password: 
Login Succeeded

2、标记（Tag）镜像

your_name 换成你自己的用户名

docker tag image_name:0.0.1 your_name/image_name:0.0.1

3、推送（Push）镜像

your_name 换成你自己的用户名

docker push your_name/image_name:0.0.1

4、查看镜像

https://hub.docker.com/repositories

5、下载镜像

docker pull your_name/image_name

6、设置镜像为公开或者私有

your_name 替换为你的用户名
Settings->Visiblitity settings

https://hub.docker.com/repository/docker/your_name/bestcxx-starter/settings