如何避免在一个文件中有两个不同的名字?

在我们的项目中,我们在构建时附加分支名称,除非它是master。我们用build_id和“latest”标记它们。这就是我们想要的。

- myapp:latest
- myapp:1
- myapp:2
- myapp:3
- myapp-branch-x:latest
- myapp-branch-x:1
- myapp-branch-x:2
- myapp-branch-x:3
- myapp-branch-y:latest
- myapp-branch-y:1
- myapp-branch-y:2
- myapp-branch-y:3

为了实现这一点,我们在master branc上建造了两次。我觉得很奇怪。我们如何避免这种情况?

pipeline {
  environment {
    dockerCredentials = 'myapp-dockerhub'
    dockerRegistryUrl = 'https://dockerhub.example.com'
    imageName = "dockerhub.example.com/myapp/myapp"
    build_id = "${BUILD_ID}"
    branch_name = "${BRANCH_NAME.toLowerCase().replace('-$', '')}"
    app = ''
  }
  agent any
  stages {
    stage('Build') {
      steps {
        script {
          app = docker.build(imageName + '-' + branch_name)
          withDockerRegistry(credentialsId: dockerCredentials, url: dockerRegistryUrl) {
            app.push(build_id)
            app.push('latest')
          }
        }
      }
    }
    stage('Build-Master') {
      when {
        branch 'master'
      }
      steps {
        script {
          app = docker.build(imageName)
          withDockerRegistry(credentialsId: dockerCredentials, url: dockerRegistryUrl) {
            app.push(build_id)
            app.push('latest')
          }
        }
      }
    }
  }
}