Xibo Docker Redirect Issue

Hey,
i have installed Xibo on Docker and got the CMS running.
After i changed the Network settings in the CMS (proxyurl, proxyport and force https),
i cant get to my cms anymore.
It only tells me redirection error from firefox.
Is it possible to change the settings without using the CMS, or is there a other way to get out?

Can be closed or deleted. Found a post in forum which helped me out with deleting the setting in the sql Database.