diff --git a/test/e2e/Jenkinsfile b/test/e2e/Jenkinsfile
index 7611e1b0a..c4a5a64f9 100644
--- a/test/e2e/Jenkinsfile
+++ b/test/e2e/Jenkinsfile
@@ -22,10 +22,11 @@ class HarborChartFreshInstallPipelineExecutor extends FreshInstallPipelineExecut
             script.file(credentialsId: "kubeconfig", variable: "KUBE_CONFIG_FILE_PATH"),
             script.usernamePassword(credentialsId: "79e9fd98-cdf5-4f55-81fa-ecba01365534", usernameVariable: "DOCKER_HUB_USERNAME", passwordVariable: "DOCKER_HUB_PASSWORD")]) {
             script.sh """
+                #!/bin/bash
                 # Set proxy registry or docker credential to bypass Docker Hub rate limit
+                echo "PROXY_REGISTRY is \${PROXY_REGISTRY}"
                 if [[ "\${PROXY_REGISTRY}" != "" ]]; then
                     # set deafult registry to a proxy registry
-                    echo "PROXY_REGISTRY is \${PROXY_REGISTRY}"
                     echo '{
                     "registry-mirrors": ["'"\${PROXY_REGISTRY}"'"]
                     }' | sudo tee /etc/docker/daemon.json > /dev/null