Merge branch 'python_dev' into python

Jenkinsfile

 pipeline {
-    agent { dockerfile true }
-    
+    environment {
+        registry = "boressan/cicd"
+        registryCredential = 'dockerhub_id'
+    }
+    agent any
     stages {
+        stage('Image build') {
+            steps {
+                echo '====================building image===================================='
+                script { customImage = docker.build(registry) }
+            }
+        }
         stage('Unit testing') {
             steps {
                 echo '====================executing unittest================================'
-                sh 'tox'
+                script { customImage.inside("--entrypoint=''") {sh 'tox'} }
+            }
+        }
+        stage('Docker-hub upload') {
+            steps {
+                echo '====================uploading docker-hub=============================='
+                script { docker.withRegistry('', registryCredential) { customImage.push() } }
             }
         }
     }