Created pipeline for Jenkins in Kubernetes cluster

.jenkins/Jenkinsfile

@@ -0,0 +1,90 @@
+pipeline {
+    agent {
+        kubernetes {
+            defaultContainer 'kubectl'
+            yamlFile '.jenkins/podTemplate.yaml'
+        }
+    }
+    environment {
+        RESOURCE_GROUP = 'tst-aks-rg'
+        CLUSTER_NAME   = 'build'
+        DEPLOY_FILES   = 'namespace.yaml secret-store.yaml deploy.yaml ingress.yaml'
+        NAMESPACE      = 'user-microservice'
+        DEPLOYMENT     = 'api'
+    }
+    stages {
+        stage('Checkout') {
+            steps {
+                container('kubectl') {
+                    checkout scm
+                }
+            }
+        }
+        stage('Login to Azure & Get Kubeconfig') {
+            steps {
+                container('kubectl') {
+                    sh '''
+                        az login --identity
+                        az aks get-credentials --resource-group $RESOURCE_GROUP --name $CLUSTER_NAME --overwrite-existing
+                    '''
+                }
+                container('kubelogin') {
+                    sh '''
+                        kubelogin convert-kubeconfig -l azurecli
+                    '''
+                }
+            }
+        }
+        stage('Apply Kubernetes Resources') {
+            steps {
+                container('kubectl') {
+                    script {
+                        def files = DEPLOY_FILES.tokenize()
+                        for (file in files) {
+                            sh "kubectl apply -f ${file}"
+                        }
+                    }
+                }
+            }
+        }
+
+        stage('Verify Deployment') {
+            steps {
+                container('kubectl') {
+                    script {
+                        // Waiting until all pods reach "ready" status
+                        sh '''
+                            echo "Waiting for deployment rollout..."
+                            kubectl rollout status deployment/$DEPLOYMENT -n $NAMESPACE --timeout=60s
+                        '''
+                    }
+                }
+            }
+        }
+
+        stage('Health Check') {
+            steps {
+                container('kubectl') {
+                    script {
+                        // Check if app is healthy
+                        def ingressUrl = "https://user-microservice.marcin00.pl/health"
+                        sh """
+                            echo "Checking app health ${ingressUrl}..."
+                            for i in {1..30}; do
+                                if curl -sf $ingressUrl; then
+                                    echo "Health check OK"
+                                    exit 0
+                                else
+                                    echo "Health check failed. Retry \$i..."
+                                    sleep 5
+                                fi
+                            done
+                            echo "Health check failed."
+                            exit 1
+                        """
+                    }
+                }
+            }
+        }
+    }
+}