Pipeline do jenkins para deploy com docker

gistfile1.txt

node{
    stage('git pull') {
        git url: 'https://github.com/caiogallo/ci-sample.git', branch: 'master'
    }
    stage('build'){
        withMaven(maven: 'maven'){
            sh 'mvn clean package'
        }
    }    
    stage('Build docker images'){
        docker.withTool('docker'){
            def app = docker.build 'ci-app-image'
        }
    }
    
    stage('Stop and remove containers'){
    
        docker.withTool('docker'){
            sh '''
                NAME=ci-sample
                
                CONTAINER=`docker ps -a -q -f name=$NAME`
                echo container: $CONTAINER
                if [ -z $CONTAINER ]
                then
                    echo "container $NAME not running"
                else
                    docker stop $CONTAINER
                    docker rm $CONTAINER
                fi
                
            '''
        }
    }
    
    stage('Start containners'){
        docker.withTool('docker'){
            docker.image("ci-app-image")
                  .run('-p 8090:8080 --name ci-sample')
        }
    }
}