Adding robots.tx and a sitemap

Hello -

I host a Dash app on a subdomain of my website for my users to interactively explore community survey data. From what I can tell, search engines treat sub domain’s as their own unique domain. So, I would like to have a robots.txt and a sitemap.xml file available for the craweler.

How can I accomplish this?

Would you recommend hosting the app at instead of


Is this possible? I haven’t been able to figure it out.