How to Install Docker Compose on Ubuntu

It is often required to run multiple services at a given time in the modern world of software development. A web application may require a web server and database server as well as a caching system and multiple worker services. Managing all of these services may be quite challenging. This is why you should know how to install Docker Compose on Ubuntu.

Docker Compose gives you access to a powerful tool. That tool enables you to create and manage Docker applications with a simple configuration file. You no longer have to start each of your containers individually. You can instead use Docker Compose to create a simple file in YAML format. That is how you start all of your containers with one simple command.

Ubuntu is a popular operating system. You can create a flexible development ecosystem as you combine Ubuntu with Docker and Docker Compose. We will explore how to complete Docker installation and how to set up Compose the right way.

Prerequisites Before Installing Docker Compose

Your system must meet certain requirements before you install Docker Compose. This will ensure the installation process goes smoothly and prevents any compatibility problems.

The requirements for your Ubuntu system are as follows:

• Ubuntu 20.04, 22.04
• Root or sudo access
• Internet connection for downloading packages
• Docker must be installed

The Docker installation process must be done first if Docker has not been installed.

Step 1: Update Your Ubuntu System

Update your system packages before installing any package. That is the best practice. This makes sure your operating system has the latest security patches and dependencies.

The command to execute on the terminal will be:

sudo apt update && sudo apt upgrade -y

Updating the system to avert conflicts. The conflicts that may occur during the installation process. It ensures stability for your Ubuntu system.

Step 2: Install Docker on Ubuntu

You should install Docker to complete the installation since Docker Compose is dependent on Docker.

Want to install Docker? You should use the official Docker repository. Apply the following command to do so:

sudo apt install docker.io -y

Use the following command to confirm that Docker is successfully installed:

sudo systemctl start docker
sudo systemctl enable docker

The following command checks the Docker version:

docker --version

Finally, you have successfully installed Docker if you get a Docker version from the above command.

Step 3: Install Docker Compose on Ubuntu

Now it is time to install Docker Compose.

Docker Compose is a plugin for Docker. Moreover, that is available for Ubuntu. The installation of Docker Compose is easy using the official package manager.

Run the following command:

sudo apt install docker-compose-plugin

This command will install the latest stable Compose plugin that is compatible with Docker.

You can verify once you install Compose. That it is properly installed by checking the version of Compose that you just installed.

docker compose version

You are done with setting up Compose once you get a version number from this command.

Step 4: Create a Docker Compose Configuration File

You are ready to start creating container environments once you install Compose. Now, let us create a directory to hold our project.

mkdir docker-project

cd docker-project

Let us create a Compose file.

nano docker-compose.yml

Here is a basic configuration file that runs an Nginx container:

version '3'

services:

  web:

    image: nginx

    ports:

        - "8080:80"

Start our container environment.

docker compose up -d

We are done!

Step 5: Manage Containers with Docker Compose

Managing the containers is extremely easy after installing Docker Compose.

Some useful commands are:

Start Containers

docker compose up -d

Stop Containers

docker compose down

View Running Containers

docker ps

View Logs

docker compose logs

You can manage your entire stack with ease through these commands.

Why Docker Compose Is Important for Developers

A full and correct compose configuration makes the development process much easier. Instead of manually running the containers, developers can use infrastructure configuration.

Docker Compose helps DevOps teams collaborate. However, developers can share the same configuration file. Finally, this makes sure that all environments are consistent across different machines.

The other advantage of Docker Compose is its ability to speed up the testing process. As a result, a single command can spin up complex environments. Those include web servers and databases and caching systems and monitoring systems.

Conclusion

Learning how to install Docker Compose on Ubuntu is an important skill that every developer and DevOps engineer and system administrator should know. Moreover, Docker Compose helps you easily manage multiple services running together in a container environment using a single configuration file. Finally, you are free to approach Ultahost in case you have a query.

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