Update Jenkinsfile

Jenkinsfile

@@ -69,5 +69,13 @@ spec:
                 }
             }
         }
+        stage('Push Docker Image'){  // Pushes the images to the Container Registry
+            steps{
+                withCredentials([usernamePassword(credentialsId: 'gcr_rw_token', usernameVariable: 'username', passwordVariable: 'password')]) {
+                    sh 'echo ${password} | docker login ${registry_url} -u ${username} --password-stdin'
+                    sh 'docker push ${registry_url}/${registry_repo}/${docker_tag}'
+                }
+            }
+        }
    }
 }