Can't install Rasa using Docker

Thank you. Now it works. My intention is to create a docker image on a online server, then export the docker image and import it to an linux offline machine. How can I do that? As I said, the offline machine has absolutely no internet connection. It has only docker. The goal is to run rasa in docker in a offline machine. The only way to import the files is to create all needed data on a online machine and move the files via WinSCP to the offline machine.