Hello,
I understand that you have an inquiry about how to set up a custom domain to trigger a cloud function.
Currently, the only way to map a custom domain to your HTTP/S triggered Cloud Functions is by using
Firebase Hosting.
After creating the custom domain, you can configure the domain to handle HTTPS/S triggered
Cloud Functions.
I hope this was not too brief but if you have any follow up questions, please reply to this thread. I’m sure that there are others, who have the same scenario.
Please let me know if you have any questions.
Thank you.