build with docker libs

Jenkinsfile

@@ -2,12 +2,12 @@ pipeline {
   agent {
     node {
       label 'pi501.in.thelinuxpro.net'
+      dockerfile true
     }
   }
 
   stages {
     stage("verify tooling") {
-      node {
 	steps {
 	  sh '''
 	  docker version
@@ -16,10 +16,8 @@ pipeline {
 	  '''
 	}
     }
-    }
 
     stage('Build telegraf') {
-      node {
 	steps {
 	  script {
 	    docker.withRegistry('http://docker-registry1.in.thelinuxpro.net:5000')
@@ -30,18 +28,14 @@ pipeline {
 	  }
 	}
     }
-    }
 
     stage('Create contexts') {
-      node {
         steps {
 	  sh 'docker context ls | grep pi502 || docker context create pi502 --docker "host=ssh://pi502.in.thelinuxpro.net"'
         }
     }
-    }
 
     stage('Start container') {
-      node {
 	steps {
 	  script {
 	    def status_s = sh(returnStatus: true, script: 'grep $(docker --context pi502 compose ps | tail -n1 | awk \'{ print $2 }\') docker-compose.yml')
@@ -56,7 +50,6 @@ pipeline {
 	    }
 	  }
       }
-      }
 
     }
   }