diff --git a/Jenkinsfile b/Jenkinsfile
index 3a214e9..199fe9c 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -18,6 +18,7 @@ pipeline {
         stage('prepare') {
             steps {
                 sh '$echo ${PATH}'
+                sh 'ls -la /usr/bin | grep docker'
                 sh "which docker"
                 sh """
                     apk update && \