红帽全球峰会1.6. 镜像 ID
镜像 ID 是 Secure Hash Algorithm (SHA) 代码，用于唯一标识容器镜像。您可以使用镜像 ID 来拉取永不会更改的特定版本。
例如，以下镜像 ID 用于 docker.io/openshift/jenkins-2-centos7 镜像：
docker.io/openshift/jenkins-2-centos7@sha256:ab312bda324
docker.io/openshift/jenkins-2-centos7@sha256:ab312bda324
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