diff --git a/src/com/example/DockerBuilder.groovy b/src/com/example/DockerBuilder.groovy
index 5f7efcd..300d5ad 100644
--- a/src/com/example/DockerBuilder.groovy
+++ b/src/com/example/DockerBuilder.groovy
@@ -10,6 +10,6 @@ class DockerBuilder {
             "docker login http://${dockerRepo} -u ${nexusUser} -p ${nexusPass}",
             "docker tag ${imageName} ${dockerRepo}/my-docker-repo/${imageName}:latest",
             "docker push ${dockerRepo}/my-docker-repo/${imageName}:latest"
-        ].collect { it.toString() }
+        ]
     }
 }
diff --git a/vars/buildAndDeploy.groovy b/vars/buildAndDeploy.groovy
index 39c5ed2..b5eafdb 100644
--- a/vars/buildAndDeploy.groovy
+++ b/vars/buildAndDeploy.groovy
@@ -22,8 +22,8 @@ def call(String appName, String helmChartPath, String helmRepoName,String helmCh
     stage('Docker build & push') {
         container(containerName) {
             script {
-                sh dockerBuilder.getDockerdCommand(env.NEXUS_DOCKER_URL, useInsecureRegistry)
-                sh dockerBuilder.getDockerBuildCommands(
+                sh(script: dockerBuilder.getDockerdCommand(env.NEXUS_DOCKER_URL, useInsecureRegistry), returnStdout: true)
+                dockerBuilder.getDockerBuildCommands(
                     env.NEXUS_DOCKER_URL,
                     appName,
                     "./Dockerfile",