In my.opalstack.com, is it possible to define a catch-all URI for an application path, when setting up a domain (in https://my.opalstack.com/domains/)?
My end goal is to have a simple "under maintenance" page. For this purpose I created a Static Only application and dumped an index.html with a message in its folder. Next I replace the app under maintenance, with this maintenance app, and the message appears when browsing to /. But other paths give a 404.
How can I show this same maintenance message for all urls within that domain?