Simple Docker Demo App/.///

/** on Azure this is way we can connect K8 stage("Deploy To Kuberates Cluster"){ kubernetesDeploy( configs: 'springBootMongo.yml', kubeconfigId: 'mykubeconfig', enableConfigSubstitution: true ) } **/

Or second way is
////////////////////////////

/**  
 
stage('Deploy App') {
  steps {
    script {
      kubernetesDeploy(configs: "hellowhale.yml", kubeconfigId: "mykubeconfig")
	  
	     stage('Deploy App') {
  steps {
      sh "sed -i -e 's,image_to_be_deployed,'milan2312/hellowhale:${env.BUILD_ID}',g' hellowhale.yml"
  sh "export KUBECONFIG=/etc/kubernetes/admin.conf && kubectl apply -f hellowhale.yml"
  }
    }
  }
}

}

} **/

/**

/////// On GCP k8 cluster following steps need to do to connect Jenkins and K8 /////

stage("Deploy To Kuberates Cluster"){ steps{ withCredentials([file(credentialsId: 'demo-key', variable: 'GOOGLE_APPLICATION_CREDENTIALS')]) { sh "gcloud auth activate-service-account --key-file=${GOOGLE_APPLICATION_CREDENTIALS}" sh "gcloud config set project mssdevops-284216" sh "gcloud config set compute/zone us-central1-c" sh "gcloud config set compute/region us-central1" sh "gcloud container clusters get-credentials cluster-1 --zone us-central1-c --project mssdevops-284216" sh "sed -i -e 's,image_to_be_deployed,'milan2312/hellowhale:${BUILD_ID}',g' hellowhale.yml" sh "kubectl apply -f hellowhale.yml" }

    }
 }

**/