类似于maven，或者github，可以将我们的镜像推送到服务器docker hub中，供别人使用，前提是要登录到docker hub。
1、创建docker hub账号
进入
https://hub.docker.com/
。
按照上图注册自己的账号，并登录（sign in）
。
登陆成功
。
2、上传我们的镜像到docker hub
通过docker login 命令登录docker hub
：
[root@iZ2ze7sn66bchxncut8rgsZ opt]# 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: 18351001571
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
查看下当前images
:
[root@iZ2ze7sn66bchxncut8rgsZ opt]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest 84c5f6e03bf0 13 days ago 104MB
nginx latest 7e4d58f0e5f3 13 days ago 133MB
centos 7 7e6257c9f8d8 6 weeks ago 203MB
hello-world latest bf756fb1ae65 8 months ago 13.3kB
上传hello-world到docker hub
：
[root@iZ2ze7sn66bchxncut8rgsZ opt]# docker push hello-world
The push refers to repository [docker.io/library/hello-world]
9c27e219663c: Layer already exists
errors:
denied: requested access to the resource is denied
unauthorized: authentication required
推送失败了，名称与docker hub重复了，改个名字
[root@iZ2ze7sn66bchxncut8rgsZ opt]# docker tag hello-world wrx-hello-world
[root@iZ2ze7sn66bchxncut8rgsZ opt]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest 84c5f6e03bf0 13 days ago 104MB
nginx latest 7e4d58f0e5f3 13 days ago 133MB
centos 7 7e6257c9f8d8 6 weeks ago 203MB
hello-world latest bf756fb1ae65 8 months ago 13.3kB
wrx-hello-world latest bf756fb1ae65 8 months ago 13.3kB
上传wrx-hello-world:
[root@iZ2ze7sn66bchxncut8rgsZ opt]# docker push wrx-hello-world
The push refers to repository [docker.io/library/wrx-hello-world]
9c27e219663c: Preparing
denied: requested access to the resource is denied
仍然失败了，需要在我们上传的镜像前加上自己的账号，修改名称：
[root@iZ2ze7sn66bchxncut8rgsZ opt]# docker tag wrx-hello-world 18351001571/wrx-hello-world
再次上传：
[root@iZ2ze7sn66bchxncut8rgsZ opt]# docker push 18351001571/wrx-hello-world
The push refers to repository [docker.io/18351001571/wrx-hello-world]
9c27e219663c: Mounted from library/hello-world
latest: digest: sha256:90659bf80b44ce6be8234e6ff90a1ac34acbeb826903b02cfa0da11c82cbc042 size: 525
上传成功，去docker hub看一下：
删除本地镜像，重新pull，看是否能成功
[root@iZ2ze7sn66bchxncut8rgsZ ~]# docker rmi 18351001571/wrx-hello-world:latest
Untagged: 18351001571/wrx-hello-world:latest
Untagged: 18351001571/wrx-hello-world@sha256:90659bf80b44ce6be8234e6ff90a1ac34acbeb826903b02cfa0da11c82cbc042
Deleted: sha256:bf756fb1ae65adf866bd8c456593cd24beb6a0a061dedf42b26a993176745f6b
Deleted: sha256:9c27e219663c25e0f28493790cc0b88bc973ba3b1686355f221c38a36978ac63
[root@iZ2ze7sn66bchxncut8rgsZ ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest 84c5f6e03bf0 2 weeks ago 104MB
nginx latest 7e4d58f0e5f3 2 weeks ago 133MB
centos 7 7e6257c9f8d8 6 weeks ago 203MB
[root@iZ2ze7sn66bchxncut8rgsZ ~]# docker pull 18351001571/wrx-hello-world:latest
latest: Pulling from 18351001571/wrx-hello-world
0e03bdcc26d7: Pull complete
Digest: sha256:90659bf80b44ce6be8234e6ff90a1ac34acbeb826903b02cfa0da11c82cbc042
Status: Downloaded newer image for 18351001571/wrx-hello-world:latest
[root@iZ2ze7sn66bchxncut8rgsZ ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest 84c5f6e03bf0 2 weeks ago 104MB
nginx latest 7e4d58f0e5f3 2 weeks ago 133MB
centos 7 7e6257c9f8d8 6 weeks ago 203MB
18351001571/wrx-hello-world latest bf756fb1ae65 8 months ago 13.3kB
