agent {
    node {
      label 'maven'
    }
  }
  stages {
      stage ('checkout scm') {
            steps {
                container ('maven') {
                    echo "hello world"
                }
            }
        }
  }
}

只想测试一下maven容器，一直处于offline状态
Running in Durability level: MAX_SURVIVABILITY
[Pipeline] Start of Pipeline
[Pipeline] node
Still waiting to schedule task
‘maven-7p43b’ is offline