Hello, I have a simple Bottle.py python app inside a docker container that exposes port 8081. If I visit my.droplet.ip:8081 the app shows up. Now, I want the app to be on sub.mydomain.tld. Please note that I am running Apache2 and mydomain.tld is not hosted on my droplet. How may I approach the problem?
I have tried that earlier. I created a subdomain. Inside hostname, I entered @, inside 'will direct to' I entered my.droplet.ip:8081 but it says invalid IP address. Am I missing something?
DNS doesn't redirect to ports, you have to use a webserver to proxy it for you.
What you need to do is setup proxying. This can be done with Apache using mod_proxy and there's a guide for exactly that here at DigitalOcean.
Without using a proxy, which internally accepts requests for domain.com or sub.domain.com and serves domain.com:2365 (or any application running on a port, just an example), you'd need to keep the ports in the URL's.
