add Jenkinsfile

Jenkinsfile

@@ -4,7 +4,7 @@ node {
     stage('Initialize'){
         def dockerHome = tool 'docker'
         env.PATH = "${dockerHome}/bin:${env.PATH}"
-        sh 'sudo usermod -aG docker jenkins'
+        sh 'usermod -aG docker jenkins'
     }
 
     stage('Clone repository') {