diff --git a/vars/functions.groovy b/vars/functions.groovy
index b6d33dd..abe8196 100644
--- a/vars/functions.groovy
+++ b/vars/functions.groovy
@@ -24,14 +24,18 @@ spec:
   - name: alpine
     imagePullPolicy: Always
     image: ${config.repo}/library/alpine:latest
-    tty: true"""
+    tty: true
+    command:
+    - /bin/sh"""
     }
     if (config.fedora == true) {
         output += """
   - name: fedora
     imagePullPolicy: Always
     image: ${config.repo}/dockerhub/library/fedora:latest
-    tty: true"""
+    tty: true
+    command:
+    - /bin/sh"""
     }
     for (image in customImages) {
         if (image.name && image.name != "" && image.path && image.path != "") {