Update docker-compose.yaml

[zotochev]

You have conflicting lines in order_service/Dockerfile and docker-compose.yaml

order_service/Dockerfile

COPY ./app_common order_service/app_common

./docker-compose.yaml

volumes:
  - ./order_service/order_service:/code/order_service

This lines meant to do the same thing copy service source code to the container but volumes statement does not copy app_common/* code and because of it I could not start this demo for some time. It appeared that there was not app_common directory in order_service and order_service_worker containers

[zotochev]

Or maybe it is better to update docker-compose.yaml

volumes:
  - ./order_service/order_service:/code/order_service
  - ./app_common:/code/order_service/app_common