The following variables have been added to the installer. These variables correlate 1:1 with the options exposed in the official Generic OAuth authentication Grafana plugin.
services_grafana_oauth_enabled services_grafana_oauth_name services_grafana_oauth_allow__sign__up services_grafana_oauth_client__id services_grafana_oauth_client__secret services_grafana_oauth_scopes services_grafana_oauth_empty__scopes services_grafana_oauth_email__attribute__name services_grafana_oauth_email__attribute__path services_grafana_oauth_login__attribute__path services_grafana_oauth_name__attribute__path services_grafana_oauth_id__token__attribute__name services_grafana_oauth_auth__url services_grafana_oauth_token__url services_grafana_oauth_api__url services_grafana_oauth_allowed__domains services_grafana_oauth_team__ids services_grafana_oauth_allowed__organizations services_grafana_oauth_role__attribute__path services_grafana_oauth_role__attribute__strict services_grafana_oauth_groups__attribute__path services_grafana_oauth_tls__skip__verify__insecure services_grafana_oauth_tls__client__cert services_grafana_oauth_tls__client__key services_grafana_oauth_tls__client__ca
All values are passed directly to the Grafana config (grafana.ini) file. For example, services_grafana_oauth_client__id will be rendered into the config file as follows:
[auth.generic_oauth] client_id = **YOUR_CLIENT_ID**