Shopify - reverse proxy

1. Caddy version (2):

V2

2. How I run Caddy:

I need info/examples

a. System environment:

Linux Red Hat

b. Command:

c. Service/unit/compose file:

d. My complete Caddyfile or JSON config:

3. The problem I’m having:

I need information / documentation. I want to set up a reverse proxy. Shopify has Web Triggers - REST API which will call your REST API when certain events occur, and I want this web trigger to call Caddy and Caddy - external web server to pass the call to my internal webserver. So I need information and examples on how to set up my Caddy to receive REST API calls and forward these calls to my internal webserver. So far I have not found this information or more likely I don’t know what I am looking at. Can someone point me at this information so at least I know I am looking at the right information?

4. Error messages and/or full log output:

5. What I already tried:

6. Links to relevant resources: