Docker compose issue and port problem on ubuntu

[jonskoglund]

I have an Ubuntu VM with docker running. The usual way of how I use a docker based app is by using a docker-compose.yaml file. The one provided in the source code is in a format that I'm not familiar with. On top of that is the issue that my 3000 port is already occupied by another docker container. I tried changing the port but that didn't fix the issue. I was unable to run this docker container.
Any tips on how to tackle these issues? Thanks in advance. Looking forward to using this very useful docker container.