Can i use this to change the Authentication service in Netlify CMS?

I am looking for something that will let me change the Login service in my Netlify-CMS admin panel.
For now, it is connected to self-hosted GitLab repo (no Netlify service integration, just Netlify CMS) and by default - it requires GitLab account to log in to admin.

Can I change it to Azure accounts (that would be given permissions to this gitlab repo, somehow?)