node {    
      def app     
      stage('Clone repository') {               
             
            checkout scm    
      }  
    
      stage('Build image') {         
       
            app = docker.build("sparafinski/ium", "./Docker/")    
       } 
    
      stage('Test image') {           
            app.inside {            
             
             sh 'echo "Tests passed"'        
            }    
      }     
}