How to install and use Docker Compose on Debian 10 image

Docker is a containerization platform that lets you quickly build, test, and deploy applications as portable, self-sufficient containers that can run almost anywhere. Docker Compose is a tool that allows us to customize and orchestrate multi-container Docker applications. It uses YAML files to configure the application's containers, networks, and volumes.

Compose can be used for a variety of purposes. Single-host application deployment, automated testing, and local development are the most popular use cases for Docker Compose. This article will introduce how to install the latest version of Docker Compose on Debian 10 Buster. Includes basic applications.

First, basic conditions

Before continuing, please make sure you have met the following prerequisites:

1. We have server management rights, such as root rights.

2. Docker has been installed on our server. If it is not installed, you need to install it.

Second, install Docker Compose on Debian10

The Docker Compose installation package is available in the official Debian 10 repository, but it may not always be the latest version. The recommended method is to install Docker Compose from Docker's GitHub repository.

The latest stable version of Docker Compose is version 1.23.1. Before downloading the Compose files, visit the Compose repository releases page on GitHub and check if new versions are available for download.

Address: https://github.com/docker/compose/releases

Use the following steps to install the latest version of Docker Compose on Debian 10.

1. Use wget or curl to download the Docker Compose binary file to the /usr/local/bin directory:

sudo curl -L "https://github.com/docker/compose/releases/download/1.23.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr /local/bin/docker-compose

2. Authorization permissions

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

3. Verification version

docker-compose --version

See the output:

docker-compose version 1.23.1, build b02f1306

Third, getting started with Docker Compose

Here, we give a simple example to show how to use Docker Compose to set up a local WordPress development environment.

1. Create a directory

mkdir wordpress_app && cd wordpress_app

2. Create files

nano docker-compose.yml

Paste code:

version: '3.7'
services:
db:
image: mysql:8.0
command: --default-authentication-plugin=mysql_native_password
restart: always
volumes:
-db_data:/var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: password
MYSQL_DATABASE: wordpress
wordpress:
image: wordpress
restart: always
volumes:
- ./wp_data:/var/www/html
ports:
- "8080:80"
environment:
WORDPRESS_DB_HOST: db:3306
WORDPRESS_DB_NAME: wordpress
WORDPRESS_DB_USER: root
WORDPRESS_DB_PASSWORD: password
depends_on:
-db
volumes:
db_data:
wp_data:

From the project directory, start WordPress by running the following command.

docker-compose up

We can see the output:

...
] /usr/sbin/mysqld: ready for connections. Version: '8.0.18' socket: '/var/run/mysqld/mysqld.sock' port: 3306 MySQL Community Server - GPL.
db_1_99946702ac7e | 2019-12-15T21:37:29.109255Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Socket: '/var/run/mysqld/mysqlx.sock' bind-address: ': :' port: 33060
...

Docker Compose will pull the image, start the container, and create the wp_data directory in your project directory. Enter http://0.0.0.0:8080/ in the browser and we can see the standard WordPress installation wizard.

We can see that these commands are available.

1. Stop

CTRL+C

2. Use the -d option to start Compose in detached mode

docker-compose up -d

3. To view the running docker container, please use the following command

docker-compose ps

4. To stop the service when Compose is running in detached mode, use:

docker-compose stop

5. If you want to completely delete the container, please use the down option:

docker-compose down

Fourth, uninstall Docker Compose

If we need to uninstall Docker Compose.

sudo rm /usr/local/bin/docker-compose

It’s that simple, have we learned how to install Docker Compose on Debian again.

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