Installing Docker and Docker Compose on Ubuntu

This guide will help you install Docker and Docker Compose on an Ubuntu system.

Prerequisites

• A system running Ubuntu (preferably 20.04 LTS or later)
• A user account with sudo privileges

Installing Docker

1. Update the package index:

   sudo apt update
   

2. Install required packages:

   sudo apt install apt-transport-https ca-certificates curl software-properties-common
   

3. Add Docker's official GPG key:

   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   

4. Set up the Docker repository:

   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
   

5. Update the package index again:

   sudo apt update
   

6. Install Docker CE:

   sudo apt install docker-ce
   

7. Check the Docker service status:

   sudo systemctl status docker
   

8. Add your user to the docker group to run Docker commands without sudo:

   sudo usermod -aG docker $USER
   

9. Log out and log back in to apply the group changes.

Installing Docker Compose

1. Download 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
   

2. Apply executable permissions to the Docker Compose binary:

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

3. Verify the installation:

   docker-compose --version
   

Verifying Docker and Docker Compose Installation

1. Run a simple Docker container:

   docker run hello-world
   

   This command downloads a test image and runs it in a container. When the container runs, it prints a confirmation message.

2. Check Docker Compose version:

   docker-compose --version
   

   This command outputs the version of Docker Compose installed.

Congratulations! You have successfully installed Docker and Docker Compose on your Ubuntu system.

Additional Resources

• Docker Documentation
• Docker Compose Documentation