netlifyCMS used to have a local backend such as :

backend:
  name: local

from the fact it doesn't work anymore and the documentation I understand it has more or less been replaced by the git-gateway backend :

backend:
  name: git-gateway

local_backend: true

However the git-gateway backend is prompting me for an email and password -while the local backend was not.
Then it sends POST data to http://example.com/.netlify/identity/token which gives a 404 anyway.

I only use this for local testing purpose, no need for any auth. How could I get rid of this auth ?