According to https://doc.ez.no/display/EZP/Configuration , it should be possible to specify ezpublish configuration settings through parameters.yml.

Available scopes are (in order of precedence) :

1. global
2. SiteAccess
3. SiteAcces group
4. default

However, dynamic configuration specified for siteaccess group(s) is not taken into account.

Steps to reproduce:

Remove a siteaccess setting from ezpublish.yml and apply it through parameters. for example, the following works:

parameters:
    ezsettings.eng.languages: [ "eng-GB" ]

but the following does not:

parameters:
    ezsettings.ezdemo_site_group.languages: [ "eng-GB" ]