void runInPod(String testMyEnvValue, Closure closure){

    String dockerRegistry = "<your-registry-here>"
    String workingDir = "/home/jenkins/agent"
    String userID = "1000"
   String gID = "1000"
   String uniqueLabel = "test-env-virables-${UUID.randomUUID().toString()}"
   String buildDockerImage = "${dockerRegistry}/ubuntu:20.04"
   String jnlpDockerImage = "${dockerRegistry}/jenkins/inbound-agent:4.11-1-alpine-jdk11"
   List imagePullSecrets = ["<your-pull-secret-here>"]

    steps.podTemplate(
        label: uniqueLabel,
        containers: [
            steps.containerTemplate(
                args: "",
                command: "",
                image: jnlpDockerImage,
                name: "jnlp",
                ttyEnabled: false,
                workingDir: workingDir
            ),
            steps.containerTemplate(
                args: "99d",
                command: "sleep",
                image: buildDockerImage,
                name: "build",
                resourceRequestCpu: "1",
                resourceLimitCpu: "1",
                resourceRequestMemory: "1Gi",
                resourceLimitMemory: "1Gi",
                ttyEnabled: false,
                workingDir: workingDir
            ),
        ],
        // Setting environment variables for the pod
        envVars: [
            steps.envVar(key: 'MY_ENV', value: "${testMyEnvValue}")
        ],
        runAsUser: userID,
        runAsGroup: gID,
        nodeUsageMode: "EXCLUSIVE",
        nodeSelector: "beta.kubernetes.io/os=linux",
        imagePullSecrets: imagePullSecrets,
        workspaceVolume:
            steps.emptyDirWorkspaceVolume(memory: false)
    ){
        node(uniqueLabel) {
            closure()
        }
    }
}

stage("nested pods"){
    runInPod("1"){
        sh("echo MY_ENV == \$MY_ENV") // expected to get 1 -- passed

        runInPod("2"){
            sh("echo MY_ENV == \$MY_ENV") // expected to get 2 -- passed 
        }
    }
}

stage("pod should override env value"){

    withEnv(["MY_ENV=0"]){
        runInPod("1"){
            sh("echo MY_ENV == \$MY_ENV") // expected to get 1 -- failed got 0
        }
    }
}


stage("wnv value defined first  + nested pods"){
    env.MY_ENV="00"
    runInPod("1"){
        sh("echo MY_ENV == \$MY_ENV") // expected to get 1 -- failed got 00

        runInPod("2"){
            sh("echo MY_ENV == \$MY_ENV") // expected to get 2 -- failed got 00
        }
    }
}