Containerizing Applications With Docker Compose: A Step-By-Step Guide

Step 1: Launch An Instance

• Go to AWS Console and login to AWS Console with your credentials
• Now Go to EC2 Dashboard and launch an instance

• Now Connect with terminal

Step 2: Install Docker

• Now install docker with following command

sudo yum -y install docker

• Start and enable docker. Without starting docker it cannot be start the docker and cannot execute docker commands

sudo systemctl start  docker
sudo systemctl enable docker
sudo systemctl status docker

Step 3: Install Docker Compose

• Now install docker-compose because we are dealing with docker compose without docker-compose we can run docker-compose file. By using following commands we can install docker-compose

sudo curl -L https://github.com/docker/compose/releases/download/1.22.0/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose

• Now change permissions to docker-compose by using following commands

sudo chmod +x /usr/local/bin/docker-compose

• Here +x means we are giving execution permissions only to docker-compose.

Step 4: Create Docker Compose File

• Now create docker-compose file by using following commands

sudo vi docker-compose.yml

version: '3.3'
services:
  db:
    image: mysql:8.0.27
    command: '--default-authentication-plugin=mysql_native_password'
    volumes:
      - db_data:/var/lib/mysql
    restart: always
    environment:
      - MYSQL_ROOT_PASSWORD=somewordpress
      - MYSQL_DATABASE=wordpress
      - MYSQL_USER=wordpress
      - MYSQL_PASSWORD=wordpress
    expose:
      - 3306
      - 33060
  wordpress:
    image: wordpress:latest
    ports:
      - 80:80
    restart: always
    environment:
      - WORDPRESS_DB_HOST=db
      - WORDPRESS_DB_USER=wordpress
      - WORDPRESS_DB_PASSWORD=wordpress
      - WORDPRESS_DB_NAME=wordpress
volumes:
 db_data:

Step 6: Start Docker Containers

• After building the image, start the Docker containers using the following command:

docker-compose up

Step 7: Verify The Application

• Now go to EC2 dashboard copy public IP and browse it

In the present quickly developing scene of software development and deployment, containerization has arisen as a unique advantage. It offers a solution for the perpetual test of ensuring consistency in software conditions across different phases of the development lifecycle and different sending targets. At the front line of containerization innovation stands Docker, a stage that has reformed how applications are built, delivered, and run.

One of Docker’s key components is Docker Compose, a tool intended to work on the orchestration of multi-container Docker applications. Docker Compose empowers designers to define complex application architectures in a single, easy-to-understand YAML file, smoothing out the most common way of managing interconnected services.

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Toward the finish of this instructional exercise, you’ll have a strong handle of how to use Docker Compose to containerize your applications successfully, preparing for smoother improvement work processes, more productive deployment processes, and more noteworthy versatility and flexibility in your applications. Whether you’re a carefully prepared designer hoping to upgrade your sending practices or a newcomer to containerization anxious to investigate its prospects, this instructional exercise will furnish you with the information and devices you really want to prevail in the realm of containerized applications. Let’s dive in !