One of the most popular platforms for developers, Docker provides a flexible environment for developing, testing, and deploying applications. In this blog post, we will guide you through the steps on how to install Docker on Linux.
Prerequisites
Before we begin, it’s important to note that you should have:
- A Linux system (we are using Ubuntu for this tutorial)
- Access to a terminal window/command line
- Sudo or root privileges
Step 1: Update Your System
Firstly, it’s a good practice to ensure your system packages are up-to-date. You can do this by running the following commands:
sudo apt-get update
sudo apt-get upgrade
Step 2: Install Docker
Now, let’s install Docker. The best way to do this is by using the repository that Docker provides. First, we need to add the GPG key for the official Docker repository to the system:
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
Next, add the Docker repository to APT sources:
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
Update the package database with the Docker packages:
sudo apt-get update
Finally, you can now install Docker:
sudo apt-get install docker-ce
Step 3: Verify Docker Installation
Once the installation process is complete, you can verify that Docker was correctly installed by running the Docker command:
sudo docker run hello-world
This command will download a test image and run it in a container. If it runs without any errors, congratulations! You’ve successfully installed Docker on your Linux system!
Conclusion
In this tutorial, we learned how to install Docker on a Linux system. Docker is a great tool for developers to package and distribute their applications. With Docker, you can ensure that your applications will run the exact same way no matter where they are run.