[BUG] New API returns 404 from docker container

[rcholic]

Describe the bug
I created a new Http Get-based API inside the UsersController.cs and built/run the service in docker container using the provided docker-compose.postgresql.yml file.

When I test the new API served from docker container, I get 404 response. I suspect the built docker image/container does not have my new code.

btw: build and run the docker image in Ubuntu.