Added Jenkinsfile

Jenkinsfile

@@ -1,29 +1,10 @@
 pipeline {
   agent any
   stages {
-    stage('Create temporary directory') {
-      steps {
-        sh 'mkdir -p /tmp/jenkins-venv'
-      }
-    }
-
-    stage('Create virtual env') {
-      steps {
-        sh '''
-              python3 -m venv /tmp/jenkins-venv'''
-      }
-    }
-
-    stage('Start virtual env') {
-      steps {
-        sh '              source /tmp/jenkins-venv/bin/activate'
-      }
-    }
-
     stage('Install build dependencies') {
       steps {
         sh '''
-              pip install -U pytest setuptools setuptools-git-version'''
+              pip install -U --update pip pytest setuptools setuptools-git-version'''
       }
     }