diff --git a/README.md b/README.md
index e667c0a..fab7cbc 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,8 @@
-# gns3-ubuntu-cloud-init-data
-Ubuntu cloud-init-data image for GNS3 virtual appliance
+# Ubuntu cloud-init-data image for GNS3 virtual appliance
+
+Generated using the following commands:
+```
+echo -e "#cloud-config\npassword: ubuntu\nchpasswd: { expire: False }\nssh_pwauth: True" > user-data
+echo -e "instance-id: ubuntu\nlocal-hostname: ubuntu" > meta-data
+mkisofs -output "ubuntu-cloud-init-data.iso" -volid cidata -joliet -rock {user-data,meta-data}
+```