Declarative Jenkinsfile Environment Variables

Jenkinsfile

pipeline {
  agent any
  stages {
    stage('Example') {
      environment {
        // 'This value is exported to all commands in this stage'
        AWESOME_BUILD = "${env.BUILD_ID + '/working'}"
      }
      steps {
        sh 'mkdir -p $AWESOME_BUILD'
        sh 'touch $AWESOME_BUILD/the_file'
        // Try to export the variable
        sh 'export AWESOME_FILE=$AWESOME_BUILD/the_file'
        // But it won't show up here!
        sh 'echo $AWESOME_FILE'
        // However, if we bundle it in a single sh command
        // it will work.
        sh '''
            export AWESOME_FILE=$AWESOME_BUILD/the_file
            echo $AWESOME_FILE
        '''
      }
    }
  }
}