Long story short, the problem is that you mount the data folder from your PC with the docker one, which overwrites everything.
In order to make it work, you’ll have to delete these lines from docker-compose.yml :
But to fix the docker compose up --build command, you’ll have to change this line in Dockerfile as well :
to:
COPY src ./src
As I can see, @khamarr3524 in Nakama/Docker Path Issues have the same problem.