Is there any way I can key in the subscription details (e.g. application_id, application_key, subscription_id, etc) via a textfile? I would like to automate the configuration via an external script
Sorry I missed this last year, you can always add inputs via the rest endpoints. See restmap.conf and the spec files within the apps readme and then use the rest api tutorial to figure out how you might send the settings via a rest post.