pipeline-maven-3.0.3-beta-1

node("linux-agent-with-docker") {
    docker.image('maven').inside {
        withMaven(mavenSettingsConfig: 'my-maven-settings') {

            git "https://github.com/cyrille-leclerc/my-jar.git"

            // prepend the $MVN_CMD variable to the $PATH environment variable in each "sh" step that invokes mvn 
            sh 'export PATH=$MVN_CMD:$PATH && mvn help:effective-settings'
        }
    }
}

https://repo.jenkins-ci.org/releases/org/jenkins-ci/plugins/pipeline-maven/3.0.3-beta-1/pipeline-maven-3.0.3-beta-1.hpi