Docker-compose - unable to make it work but it used to

[MichelDiz]

@Anton

    volumes:
      - /tmp/data:/dgraph
    ports:
      - 8000

Remove this volume, Ratel doesn’t need it. Also, when you use a single port param instead of host:container Docker may expose Ratel in a random port. So, set the param to 8000:8000.