How to add values to ckan.ini for plugin configuration

[Walorda]

I am trying to install the SAMl2auth plugin and have to set up some configuration settings but after trying to add variables to .env and changing the ckan docker.dev file nothing happens. i already tried adding a folder docker-entrypoint.d->setup_validation.sh but also in ckan.ini the variable is not shown.

i cannot seem to add ckanext__saml2auth__user_email = email in the ckan.ini for the SAML2auth plugin it will give me an error the variable is not set.