Setup Kong to use DNS

I have set up the Kong API gateway following the docker documentation here. With the curl command below, I can confirm that Kong is up and responding via localhost.

curl -i http://localhost:8001/services

HTTP/1.1 200 OK
Date: Thu, 13 May 2021 15:39:32 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
Access-Control-Allow-Origin: http://localhost:8002
X-Kong-Admin-Request-ID: xeUkwshQPRXA5T9bPQmxsmPcspJCGU2L
vary: Origin
Access-Control-Allow-Credentials: true
Content-Length: 23
X-Kong-Admin-Latency: 5
Server: kong/2.3.3.2-enterprise-edition

My question is how to invoke the gateway API from an external client and configure Kong to route to DNS/URL and not just localhost from the same machine?

Example:
A client should be able to make a GET request to http://my-kong-domain.com/serviceA/route and have Kong proxy this request to the relevant upstream service ie a backend microservice.
I have a DNS A record setup pointing my-kong-domain.com → the server of my Kong sever

I have searched online and through the documentation but it is evident I missing something here so thanks in advance for any assistance.

Solved.

Container needed the correct port open exposed running under docker to receive requests.