final pod = '''
apiVersion: v1
kind: Pod
spec:
  containers:
    - name: busybox
      image: busybox
      command: ['/bin/sh', '-c', 'sleep infinity & wait']
'''

final block = {
  sh returnStdout: true, script: 'git --version'
}

pipeline {
  agent {
    kubernetes {
      yaml pod
      defaultContainer 'busybox'
    }
  }

  environment {
    one = container('jnlp', block)
    two = container('jnlp') {
      sh returnStdout: true, script: 'git --version'
    }
  }

  stages {
    stage('A') {
      steps {
        sh 'echo $one'
        sh 'echo $two'
      }
    }
  }
}