How to access logs in AWS instance?

In the documentation, it says to use "docker logs teamcity-server"

But I get a docker not found.

And I am looking and searching and going crazy trying to find the logs, and I don't even know where TeamCity is found in the linux server.

I followed these instructions to get a stack running with minor corrections to the template. The Server seems to be running.

https://www.jetbrains.com/help/teamcity/running-teamcity-stack-in-aws.html