Ruby Jenkins Pipeline

Jenkinsfile

pipeline {
    agent none
    stages {
        stage('build and test') {
            agent {                     
                docker { 
                    image 'ruby:3.1.0'
                }
            }
            steps {
                echo "whatever is done for ruby can go here"
                sh """
                ruby --version
                """
            }
        }      
    }
}