I´ve read this article about login in into google.
XIBO CMS google-sign up and login
I have a docker installation, is this possible
If so, how?
Yes it’s possible. Your CMS needs to be on the public internet and needs to have a valid SSL certificate.
Assuming it does, then you setup a new SAML app in GSuite following their instructions, and use the docs linked in the original article to configure Xibo to use that IdP.