Coding the microservice

We have the database of the RecommendationService microservice defined and created in our docker-compose.yml file. We will now do the same to create a container for the microservice. Again, let's edit the docker-compose.yml file.

In this code, we have a dependency, the database, and the message broker, besides some definitions of environmental variables, mainly to connect to the database and queues:

    recommendation_service:
      image: recommendation_service
      build: ./RecommendationService
        volumes:
          - './RecommendationService:/app'
        environment:
          - QUEUE_HOST=amqp://guest:guest@rabbitmq
          - DATABASE_URL=http://recommendation_db:7474/db/data
          - USER_SERVICE_ROUTE=http://172.17.0.1/user/
        depends_on:
          - recommendation_db
          - rabbitmq
        links:
          - recommendation_db
          - rabbitmq

Now, let's create the RecommendationService directory and files. At the end, the structure...