docker-compose.yaml

# use `docker-compose up` to launch multiple container at once locally.
version: '3.7'

# each container which we launch is a service in docker-compose.
services:
  currency-exchange:
    image: od/ms-currency-exchange-service:0.0.1-SNAPSHOT
    # set memory limit for this container.
    mem_limit: 700m 
    ports:
      - "8000:8000"
    networks:
      - currency-network
    # as this container depends on eureka server as well.
    depends_on:
      - naming-server
      - rabbitmq
    # properties below are configured in application.properties using localhost.
    # we use alias to communicate within networks. ex: http://naming-server:8761
    environment:
      EUREKA.CLIENT.SERVICEURL.DEFAULTZONE: http://naming-server:8761/eureka
      SPRING.ZIPKIN.BASEURL: http://zipkin-server:9411/
      RABBIT_URI: amqp://guest:guest@rabbitmq:5672
      SPRING_RABBITMQ_HOST: rabbitmq
      SPRING_ZIPKIN_SENDER_TYPE: rabbit

  currency-conversion:
    image: od/ms-currency-conversion-service:0.0.1-SNAPSHOT
    mem_limit: 700m
    ports:
      - "8100:8100"
    networks:
      - currency-network
    depends_on:
      - naming-server
      - rabbitmq
    environment:
      EUREKA.CLIENT.SERVICEURL.DEFAULTZONE: http://naming-server:8761/eureka
      SPRING.ZIPKIN.BASEURL: http://zipkin-server:9411/
      RABBIT_URI: amqp://guest:guest@rabbitmq:5672
      SPRING_RABBITMQ_HOST: rabbitmq
      SPRING_ZIPKIN_SENDER_TYPE: rabbit

  api-gateway:
    image: od/ms-api-gateway:0.0.1-SNAPSHOT
    mem_limit: 700m
    ports:
      - "8765:8765"
    networks:
      - currency-network
    depends_on:
      - naming-server
      - rabbitmq
    environment:
      EUREKA.CLIENT.SERVICEURL.DEFAULTZONE: http://naming-server:8761/eureka
      SPRING.ZIPKIN.BASEURL: http://zipkin-server:9411/
      RABBIT_URI: amqp://guest:guest@rabbitmq:5672
      SPRING_RABBITMQ_HOST: rabbitmq
      SPRING_ZIPKIN_SENDER_TYPE: rabbit

  naming-server:
    image: od/ms-naming-server:0.0.1-SNAPSHOT
    # set memory limit for this container
    mem_limit: 700m 
    ports:
      - "8761:8761"
    networks:
      - currency-network

  zipkin-server:
    image: openzipkin/zipkin:2.23
    mem_limit: 300m
    ports:
      - "9411:9411"
    networks:
      - currency-network
    environment:
      RABBIT_URI: amqp://guest:guest@rabbitmq:5672
    depends_on:
      - rabbitmq
    restart: always # restart if there is a problem starting up.

  # rmq dependency is added in all the services.
  rabbitmq:
    image: rabbitmq:3.8.12-management
    mem_limit: 300m
    ports:
      - "5672:5672" # management port.
      - "15672:15672" # curreny network port.
    networks:
      - currency-network

# networks are used to club internal ports of containers.
networks:
  currency-network: