webtrees_ynh/conf/sql/admin.sql

INSERT INTO `wt_user` (`user_id`, `user_name`, `real_name`, `email`, `password`) VALUES (NULL, '__USER_NAME__', '__NAME__', '__USER_EMAIL__', '__PASSWORD__');
INSERT INTO `wt_user_setting` (`user_id`, `setting_name`, `setting_value`) VALUES ('1', 'canadmin', '1'), ('1', 'verified', '1'), ('1', 'verified_by_admin', '1');