create cluster ISO image

pkg/helpers/env.go

@@ -0,0 +1,14 @@
+package helpers
+
+import (
+	"os"
+)
+
+// GetEnv - Lookup the environment variable provided and set to default value if variable isn't found
+func GetEnv(key, fallback string) string {
+	if value := os.Getenv(key); len(value) > 0 {
+		return value
+	}
+
+	return fallback
+}