First iteration to implement jenkins shared libraries

Jenkinsfile

@@ -1,3 +1,5 @@
+@Library('my-shared-library@main') _
+
 pipeline {
     agent {
         kubernetes {
@@ -73,72 +75,52 @@ spec:
     stages{
         stage('Make jar') {
             steps {
-                container('maven') {
-                    sh 'mvn install -DskipTests'
+                script {
+                    buildJar(true)
                 }
             }
         }
-        stage('Make chart') {
+        stage('Package helm chart') {
             steps {
-                container('helm') {
-                    sh 'helm package example-app-helm-chart/example-app'
+                script {
+                    makeHelmChart("example-app-helm-chart/example-app")
                 }
             }
         }
-        stage('Upload chart') {
+        stage('Upload helm chart') {
             steps {
                 container('maven') {
-                    sh 'curl -u admin:$NEXUS_PASS --upload-file example-app-1.0.0-SNAPSHOT.tgz $NEXUS_URL'
+                    uploadHelmChart("example-app-1.0.0-SNAPSHOT.tgz", "$NEXUS_URL", "admin", "$NEXUS_PASS")
                 }
             }
         }
-        stage('Docker in Docker start') {
+        stage('Docker build & push') {
             steps {
-                container('docker') {
-                    sh 'dockerd --insecure-registry http://$NEXUS_DOCKER_URL &'
-                }
-            }
-        }
-        stage('Docker build in Docker') {
-            steps {
-                container('docker') {
-                    sh 'docker build -t example-app -f ./Dockerfile target'
-                }
-            }
-        }
-        stage('Docker repo login') {
-            steps {
-                container('docker') {
-                    sh 'docker login http://$NEXUS_DOCKER_URL -u admin -p $NEXUS_DOCKER_PASS'
-                }
-            }
-        }
-        stage('Docker image tag') {
-            steps {
-                container('docker') {
-                    sh 'docker tag example-app $NEXUS_DOCKER_URL/my-docker-repo/example-app:latest'
-                }
-            }
-        }
-        stage('Docker image push') {
-            steps {
-                container('docker') {
-                    sh 'docker push $NEXUS_DOCKER_URL/my-docker-repo/example-app:latest'
+                script {
+                    dockerBuildAndPush("$NEXUS_DOCKER_URL", "example-app", "./Dockerfile", "target", "admin", "$NEXUS_DOCKER_PASS")
                 }
             }
         }
         stage('Add Helm Repo') {
             steps {
-                container('helm') {
-                    sh 'helm repo add my-helm-repo $NEXUS_URL'
-                    sh 'helm repo update'
+                script {
+                    addHelmRepo("my-helm-repo", "$NEXUS_URL")
                 }
             }
         }
         stage('Deploy Helm Chart') {
             steps {
-                container('helm') {
-                    sh 'helm install example-app my-helm-repo/example-app --kube-apiserver $KUBERNETES_API --kube-token $KUBERNETES_TOKEN --kube-insecure-skip-tls-verify --version 1.0.0-SNAPSHOT --set app.ports.http=8090 --set app.image=localhost:31050/my-docker-repo/example-app:latest --set imagePullSecrets[0]=nexus-secret'
+                script {
+                    deployHelm(
+                        "example-app", 
+                        "my-helm-repo", 
+                        "example-app", 
+                        "1.0.0-SNAPSHOT", 
+                        "$KUBERNETES_API", 
+                        "$KUBERNETES_TOKEN", 
+                        "localhost:31050/my-docker-repo/example-app:latest", 
+                        ["app.ports.http": 8090, "imagePullSecrets[0]": "nexus-secret"]
+                    )
                 }
             }
         }