Simplify Container Orchestration with Docker Compose

By using Docker Compose, you simplify container orchestration, especially when managing multi-container setups. Follow these steps for a quick start:

1. Download and Install Docker desktop on your machine.

2. Create a docker compose.yaml file:
   Define your services, networks, and volumes in one place. This YAML file makes it easier to manage multi-container Docker applications. In this guide, we will clone a sample application named todo-list-app. The app contains a docker compose.yaml file.

• Open a terminal

• clone the sample application

  • run the command git clone https://github.com/dockersamples/todo-list-app

The app contains a docker compose.yaml file which defines:

• An app service that builds from a node:18-alpine image.

• A database service that pulls a mysql image.

• volume for persistent data

3. Build and run containers:

• Ensure Docker desktop is open and running

• Move to the todo-list-app directory

cd todo-list-app

• Use Docker Compose to build and start your containers with a single command: the -d flag will enable detached mode.

    docker compose up -d --build
  

This will automatically build and launch all services defined in docker compose.yaml.

4. Test Your App:

   You can view and manage containers in the terminal using command or on the Docker desktop. Let us use docker desktop to view our app:

Click on the container blade on the left pane of docker desktop

• Expand the todo-list-app and verify the containers and running.

• Open the port to view the app in a browser

• Type list item and click add item

5. Stopping and removing containers:

   To stop and clean up, use:

    docker compose down