Docker compose service priority

July 12, 2023

I have a project with Spring Boot as a microservice. In Docker Compose, when the config service is executed, the other services must be executed. I have done this with depend on. But sometimes other services come up without the config service coming up. Is there a standard solution to have the second service come up after the config and not before it?
this is my sample docker-compose.yml:

`version: "3.9"
services:
  config-service:
    image: 'config-service:v1-BETA'
    build: '/opt/core/config-service/.'
    container_name: 'config-service'
    restart: always
    volumes:
      - db-data:/opt/core/data
    networks:
      - core-network
    ports:
      - "8088:8088"


  discovery-service:
    image: 'discovery-service:v1-BETA'
    build: '/opt/core/discovery-service/.'
    container_name: 'discovery-service'
    depends_on:
      - config-service
    ports:
      - "8061:8061"
    restart: always
    volumes:
      - db-data:/opt/core/data
    networks:
      - core-network
    environment:
      - "SPRING_PROFILES_ACTIVE=prod"

I also added server resources and tried to find a way like sleep function but failed

>Solution :

In Docker Compose, the depends_on directive does not guarantee ordering service startup. It only waits for the specified services to be started!

Maybe a good solution would be to run a script that takes care not to build the second service until the first one is up! On solution that I found is here

I have already fixed this problem using this solution. Copy the end of the script to the main project folder. Write Docker Compose like this

version: "3.9"
services:
  config-service:
    image: 'config-service:v1-BETA'
    build: '/opt/core/config-service/.'
    container_name: 'config-service'
    restart: always
    volumes:
      - db-data:/opt/core/data
    networks:
      - core-network
    ports:
      - "8088:8088"

  discovery-service:
    image: 'discovery-service:v1-BETA'
    build: '/opt/core/discovery-service/.'
    container_name: 'discovery-service'
    depends_on:
      - config-service
    ports:
      - "8061:8061"
    restart: always
    volumes:
      - db-data:/opt/core/data
    networks:
      - core-network
    environment:
      - "SPRING_PROFILES_ACTIVE=prod"
    command: ["dockerize", "-wait", "tcp://config-service:8088", "-timeout", "30s", "java", "-jar", "your-application.jar"]