Katalon docker error

i pull the 7.2.6 docker image but failed to start.
i just want to use free trial version, how to do?

katalon | Activating…
katalon | Start activating offline…
katalon | Search for valid offline licenses in folder: /root/.katalon/license
katalon | The number of valid offline licenses: 0
katalon | Offline activation failed.
katalon | Start activating online…
katalon | Online activation for console mode failed.
katalon | Activation failed. Please make sure you are using a valid license.