3.5.2.7.2. 在镜像流中添加额外标签
要添加指向其中一个现有标签的标签，您可以使用 oc tag 命令：
oc tag <image-name:tag> <image-name:tag>
例如：
$ oc tag python:3.5 python:latest
输出示例
Tag python:latest set to python@sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25.
使用 oc describe 命令确认镜像流有两个标签，一个(3.5)指向外部容器镜像，另一个标签(latest)指向同一镜像，因为它基于第一个标签创建。
$ oc describe is/python
输出示例
Name: python
Namespace: default
Created: 5 minutes ago
Labels: <none>
Annotations: openshift.io/image.dockerRepositoryCheck=2017-10-02T17:05:11Z
Docker Pull Spec: docker-registry.default.svc:5000/default/python
Image Lookup: local=false
Unique Images: 1
Tags: 2
latest
tagged from python@sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25
* centos/python-35-centos7@sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25
About a minute ago
3.5
tagged from centos/python-35-centos7
* centos/python-35-centos7@sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25
5 minutes ago
