Custom Checkout for a custom Dockerfile

Hi,

I’m having a problem with the Jenkinsfile syntax, using a custom Dockerfile without default checkout. The problem is simple: Considering the snippet below, how should I do the checkout?

When I checkout before the parallel stages, the checkout is done on a different node, so the Dockerfile is not found. Is that really only possible with default checkout without any custom parameters?

pipeline {
  options { skipDefaultCheckout() }
  agent any
  stages {
    stage('start parallel stages') {
      parallel {
        stage('Linux x86-64') {
          agent {
            dockerfile {
              filename 'ncp-linux.Dockerfile'
              dir 'source/tools/jenkins/docker'
              label 'docker'
            }
          }

Thanks for any help!

Jenkins setup

Jenkins: 2.401.3
OS: Linux - 5.10.0-23-amd64
Java: 11.0.18 - Debian (OpenJDK 64-Bit Server VM)
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