diff --git a/Jenkinsfile b/Jenkinsfile
index 575195b..d591c64 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -13,6 +13,9 @@ pipeline {
     stages {
         stage('Checkout') {
             steps {
+                // Print diagnostic info to see who Jenkins is running as
+                sh 'whoami && id && ls -lh /var/run/docker.sock || true'
+
                 // Pulls the latest changes from the Git repository
                 checkout scm