after that, I wanted to create steps from scratch, because I have many steps and I hope to avoid manual editing in GUI (commits and other things). I create this tasks:

You can add this to the template task Task.init(project_name=<your project name>, task_name=<your task name>) instead of the Task.create call and it will have all the inputs for you.
After, add task.set_base_docker("docker command") and it will configure the docker for the task.
Once finish configuring the task, add task.execute_remotely() and it wont actually run the task but only register it in the ClearML UI - and you have a template task ready for use (just run it once from your local machine for the registration of the task).