Usage Of Docker Compose: A Step-By-Step Guide

Step 1: Firstly Create a docker compose file. Here I am using the below docker compose file with name Docker-compose.yml to explain the difference of docker compose commands. For practice take the following docker compose yaml file:

version: '3.1'
services:
  mongo:
    image: mongo:latest
    restart: always
    environment:
      MONGO_INITDB_ROOT_USERNAME: root
      MONGO_INITDB_ROOT_PASSWORD: example

  mongo-express:
    image: mongo-express:latest
    restart: always
    ports:
      - 8081:8081
    environment:
      ME_CONFIG_MONGODB_ADMINUSERNAME: root
      ME_CONFIG_MONGODB_ADMINPASSWORD: example
      ME_CONFIG_MONGODB_URL: mongodb://root:example@mongo:27017/

Step 2: Pull the docker images to local environment with the below docker compose command:

docker compose pull

Step 3: Validate and check errors in the docker compose file with this below command:

docker compose config

Step 4: Run the docker compose application with following command:

docker compose up

Step 5: After this you can access the application at <host-machine-ip>:8081 , Here default_user_name is admin and default password is pass.

Step 6: List down all the docker containers that are running.

docker compose ps

Step 7: See the logs of docker containers.

docker compose logs

Step 8: See the running processes within each service defined in a docker compose application .

docker compose top

Step 9: Restart all the docker containers

docker compose restart

Step 10: Stop the docker containers with the following commands.

docker compose stop

Step 11: Stop And remove the docker containers.

docker compose down

Docker Compose is a powerful tool that is used to manage multi-container docker applications. Here in this guide, I will first discuss about Docker Compose CLI Registry. Then I will discuss the steps to set up the Docker Compose CLI Registry on an Ubuntu machine. After this, I will guide you through the important Docker Compose commands to manage multi-docker container applications. By the end, you will gain a profound understanding of Docker Compose and can use commands for effortless management of multi-container applications.