6.7.2. 为镜像流添加标签

流程

• 使用 `oc tag` 命令添加指向其中一个现有标签的标签：

  $ oc tag <image-name:tag1> <image-name:tag2>

  例如：

  $ oc tag python:3.5 python:latest

  输出示例

  Tag python:latest set to python@sha256:49c18358df82f4577386404991c51a9559f243e0b1bdc366df25.

• 确认镜像流有两个标签，3.5 指向外部容器镜像，latest 指向同一镜像，因为它基于第一个标签创建而成。

  $ 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