Docker is an open-source containerization platform that makes it easier to create, deploy, and run applications by packaging them in containers. Docker containers provide an isolated environment for applications, which makes them more secure and easier to manage.

In this tutorial, we’ll cover how to install Docker on Ubuntu, one of the most popular Linux distributions. By the end of this tutorial, you’ll have Docker installed and running on your Ubuntu machine.

Step 1: Update Your System

Before installing Docker, it’s important to make sure your system is up to date. You can do this by running the following command:

sudo apt-get update

This will update the package lists for upgrades and new packages that are available.

Step 2: Install Docker

To install Docker on Ubuntu, you can use the following command:

sudo apt-get install

This will install the latest version of Docker on your Ubuntu machine.

Step 3: Start and Enable Docker

To start and enable Docker, run the following commands:

sudo systemctl start docker
sudo systemctl enable docker

This will start the Docker service and enable it to start at boot time.

Step 4: Verify Docker Installation

To verify that Docker is installed and running correctly, run the following command:

docker --version

This should display the version number of the Docker installation.

Step 5: Docker Best Practices

Once Docker is installed and running, it’s important to follow best practices to ensure your Docker containers are secure and running smoothly. Some best practices include:

  • Keep your Docker installation up to date with the latest patches and security fixes
  • Use a strong password for your Docker account and avoid using default passwords
  • Use Docker images from trusted sources and only install necessary packages and libraries
  • Avoid running Docker containers as root and use non-root users instead
  • Use container orchestration tools like Kubernetes to manage and deploy Docker containers at scale

Installing Docker on Ubuntu is a simple process that can be completed in just a few steps. By following this step-by-step guide, you can get started with Docker and begin building, packaging, and deploying applications quickly and easily. Additionally, following Docker best practices can help you ensure your Docker containers are secure and running smoothly. With Docker and Ubuntu, you have a powerful combination for building and deploying applications in a reliable, scalable, and secure way.