Compose | Open Source Docker Multiple Containers Application

Compose DevOps Tool

Docker Compose Define and Run Multi-Container Applications

Docker Compose open source tool helps you to handle multi-container docker environments. It allows to use a YAML file to define multi-container simultaneously.

Overview

Docker Compose is a tool for running multi-container Docker applications defined using the Compose file format. It can be tedious start, stop, rebuild and manage multiple containers manually, so Docker has created a new useful tool that helps speed up the process i.e Docker Compose. A Compose file works by applying rule defined how the one or more containers or services are configured in a docker-compose.yaml file. When you have a compose YAML file, you can create, start and manage your application with a single command: docker compose up.

Developing applications using Docker are challenging when working on multiple services and containers. Here come the Docker Compose that will help you to run docker multiple containers applications and environments. Docker Compose can handle multiple containers simultaneously in the docker compose production, staging, development, testing, and CI environments. You can use Docker Compose to manage the whole software development lifecycle (SDLC). Docker Compose open source software has 24.8K GitHub stars and 4.2k GitHub forks.

System Requirements

Requirements to setup Docker Compose include:

  • Docker Compose
  • Docker Engine
  • sudo privileges non-root user
  • GitHub account

Features

Some of the key features of Docker Compose are listed below:

  • Hosting multiple isolated environments on a single host
  • customize containers for different environments
  • Save volume data when containers are created
  • Reuse and recreate containers that have changed
  • Variables and moving a composition between environments

Installation Instructions

Install Docker Compose On Linux

First, ensure that all the depency packages of the Docker Compose are installed and up to date then please follow the instructions listed below. You can also download the Docker Compose binary from the Compose repository release page on GitHub for on linux. The step-by-step instructions are listed below. Run this command to download the current stable release of Docker Compose:

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

To install a different version of Docker Compose linux, replace 1.29.2 with the version of Compose you want to install. Now, apply executable permissions to the downloaded binary:

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

If the command docker-compose fails after installation steps then check your paths. You can also create a symbolic link to /usr/bin or any other directory in your path with command:

sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

Optionally, you should install command completion for the bash and zsh shell. Now, test the installation using command:

docker-compose --version

Congratulations! Now, you have learned how to install docker compose ubuntu 20.04 successfully. Enjoy!

FAQs

What is Docker Compose?

Docker Compose is an opens source software used for defining, sharing and running multi-container Docker applications. Docker compose file works by defining rules in a docker-compose.yaml, how the multiple containers or services are configured. It helps to helps speed up the multi-container process.

Is Docker Compose open source?

Docker has open sourced the Compose Specification into a standalone organization for defining and running multi-container, cloud-native applications. Docker Compose source code repository is available at Github.

Is Docker Compose free?

Docker Compose is a free for small businesses for defining and running multi container application.

In what language is Docker Compose written?

Docker Compose V1 is in Python language while Docker Compose V2 is completely rewritten from scratch in Golang.

What is docker and docker compose?

The difference between Docker and Docker-compose is that Docker commands are used to run only one container or image at a time. While Docker Compose on ubuntu is used to start, stop and manage multi container Docker application, configured in a docker-compose.yaml file.

Explore

In this article we discussed about open source Docker Compose latest version. To learn about other top container orchestration tools, please visit following page: