Added script for showing all env vars

Jenkinsfile

@@ -8,6 +8,7 @@ pipeline {
         stage('Build') {
             steps {
                 sh "echo Starting build ${env.BUILD_ID}"
+                sh '/usr/bin/bash buildscripts/show_vars.sh'
                 sh '/usr/bin/bash buildscripts/clean.sh'
                 sh '/usr/bin/bash buildscripts/build_sensu.sh'
             }

buildscripts/show_vars.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/bash
+
+# Show environment vars
+export