Jenkinsfile Declarative Pipeline defining dynamic env vars

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You can create variables before the pipeline block starts. You can have sh return stdout to assign to these variables. You don’t have the same flexibility to assign to environment variables in the environment stanza. So substitute in python3.5 get_version.py where I have echo 0.0.1 in the script here (and make sure your python script just returns the version to stdout):

def awesomeVersion = 'UNKNOWN'

pipeline {
  agent { label 'docker' }
  stages {
    stage('build') {
      steps {
        script {
          awesomeVersion = sh(returnStdout: true, script: 'echo 0.0.1').trim()
        }
      }
    }
    stage('output_version') {
      steps {
        echo "awesomeVersion: ${awesomeVersion}"
      }
    }
  }
}

The output of the above pipeline is:

awesomeVersion: 0.0.1

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