VK bot: what address to enter to confirm the server?

Question

Python

I'm just starting to study the server part, so the question is a complete "zero".
There is a server on Ubuntu.
There is a Docker container with a python 3.6 image, Flask, Vk_api, redis, gunicorn and the application itself.
The container is running, running, the command after starting the container:

CMD ["gunicorn", "--bind", "0.0.0.0:80", "app:app"]

The question arose of what address to specify in the server settings of the VK control panel to confirm Callback requests. In docker-compose.yaml , the services settings now have ports: -"127.0.0.1:9000:80".
How now to transfer the localhost to the IP-shnik? How to allocate server IP for this case?
I will be grateful for any help.

Answer 1

To do this, you need a domain, and for it a static ip address