https://www.mediawiki.org/wiki/MediaWiki-Docker/Configuration_recipes/Ngrok
Though it would be COOL if this were done via a tool on toolforge instead! :)
From T339857:
I want to demo a local Wikibase change to UX in a way that they can click around in the UI. Therefore, I need my local repo dev wiki to be reachable via the internet.I tried using ngrok. I circumvented the first error (dial tcp: lookup ... no such host) by adjusting my local /etc/hosts file with what mw docker hosts add provides. However, now I always get a 503 error from nginx. Also, nginx (at least from the jwilder/nginx-proxy container) seems to not provide any errors in its error.log, though I can see the 503 request in the access log. As far as I can tell, the request does not reach Apache/MediaWiki PHP.
Any guidance on how to further debug this local ngrok connection, or suggestions for achieving the overarching goal, would be welcome