前言
镜像是Docker最核心的技术之一，也是应用发布的标准格式。Docker 镜像源与Git中的repo地址有些相似。在Docker的默认配置中，其镜像源主要是来自官方Registry（官方网站专门有一个页面来存储所有可用的镜像，网址是：index.docker.io。我们可以通过浏览这个网页来查找想要使用的镜像，或者使用命令行的工具来检索）
1、https://hub.docker.com/ 注册账号
2、本地登录DockerHub
[root@docker01 ~]# 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: wuxinchun Password: WARNING! Your password will be stored unencrypted in /root/.docker/config.json. Configure a credential helper to remove this warning. See https://docs.docker.com/engine/reference/commandline/login/#credentials-store Login Succeeded
3、本地镜像打上tag标签
[root@docker01 ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE busybox latest 42b97d3c2ae9 6 days ago 1.24MB [root@docker01 ~]# docker tag busybox:latest wuxinchun/busybox:latest //镜像名必须是以DockerHub账号名开头 [root@docker01 ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE busybox latest 42b97d3c2ae9 6 days ago 1.24MB wuxinchun/busybox latest 42b97d3c2ae9 6 days ago 1.24MB
4、本地镜像推送到DockerHub
[root@docker01 ~]# docker push wuxinchun/busybox:latest The push refers to repository [docker.io/wuxinchun/busybox] 0fd05bf2930d: Pushed latest: digest: sha256:b862520da7361ea093806d292ce355188ae83f21e8e3b2a3ce4dbdba0a230f83 size: 527
5、DockerHub查看push的镜像
6、DockerHub镜像下载
如果镜像属性为public，无需登录DockerHub账号，直接docker pull，反之需要先登录再下载
[root@docker02 ~]# docker pull wuxinchun/busybox:latest latest: Pulling from wuxinchun/busybox Digest: sha256:b862520da7361ea093806d292ce355188ae83f21e8e3b2a3ce4dbdba0a230f83 Status: Downloaded newer image for wuxinchun/busybox:latest docker.io/wuxinchun/busybox:latest
[root@docker02 ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
wuxinchun/busybox latest 42b97d3c2ae9 6 days ago 1.24MB