diff --git a/Jenkinsfile b/Jenkinsfile
index c95518b..3096821 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -3,6 +3,7 @@ pipeline {
   environment {
     registry = 'jcabillot/htpasswd'
     registryCredential = 'dockerhub_jcabillot'
+    dockerImage = ''
   }
 
   agent any