multibranch pipeline not handling multiple scripts

[Gabe Nydick]

Here is my Jenkinsfile, minus the variable declarations...

podTemplate(label: label, containers: [
  containerTemplate(name: 'kubectl', image: "$registry/kubectl:latest", command: 'cat', ttyEnabled: true),
  containerTemplate(name: 'helm', image: "$registry/helm:latest", command: 'cat', ttyEnabled: true),
],
  volumes: [
    hostPathVolume(mountPath: '/var/run/docker.sock', hostPath: '/var/run/docker.sock')
  ]) {


  node(label) {
    def myRepo = checkout scm
    def gitCommit = myRepo.GIT_COMMIT
    def gitBranch = myRepo.GIT_BRANCH
    def shortGitCommit = "${gitCommit[0..10]}"
    def previousGitCommit = sh(script: "git rev-parse ${gitCommit}~", returnStdout: true)

    stage('Create Docker images') {

      container('jnlp') { // inheriteed container

        checkout scm 
        def dockerImage = "$image:${gitCommit}"
        def dockerLatest = "$image:latest"
        def dockerfile = 'base.Dockerfile'


        docker.withRegistry("", "$credentials") {
          docker.build(dockerImage, "-f ${dockerfile} .")
          docker.build(dockerLatest, "-f ${dockerfile} .")
          docker.image(dockerImage).push()
          docker.image(dockerLatest).push()
        }
      }
    }
    
    stage('Run kubectl') {
      container('kubectl') {
        sh """
          kubectl get pods
          """
      }
    }
    stage('Run helm') {
      container('helm') {
        sh """
        helm list
        """
      }
    }
  }

}

I get the below error whenever the second stage starts. It's as if the stages are sharing their contents as any scripts i put in the first stage, appear in the other containers (all three, including the default jnlp container). As soon as stage 1 completes, those contents are wiped, and it throws this error.

What am I doing wrong?

[h_ci-cd_dev_2018-08-13-kube-B25Q2OMNNSNLLVD3BXC7FMQBF3IKQYJE4OSTUSVSM65SZ6NCGBAQ] Running shell script

sh: /home/jenkins/workspace/h_ci-cd_dev_2018-08-13-kube-B25Q2OMNNSNLLVD3BXC7FMQBF3IKQYJE4OSTUSVSM65SZ6NCGBAQ@tmp/durable-48affede/script.sh: not found

script returned exit code 127