diff --git a/vars/retrieveEnvVars.groovy b/vars/retrieveEnvVars.groovy
new file mode 100644
index 0000000..92d36d9
--- /dev/null
+++ b/vars/retrieveEnvVars.groovy
@@ -0,0 +1,9 @@
+def call(String containerName, List<String> envVars) {
+    container(containerName) {
+        script {
+            envVars.each {  var ->
+                env."$var" = sh(script: "echo \$$var", returnStdout: true).trim()
+            }
+        }
+    }
+}