How to install Docker on Ubuntu 18.04?

Docker is an open-source platform that helps to automate the deployment, testing, and scaling of applications inside containers. It's becoming increasingly popular among developers due to its flexibility and ease of use. In this article, we will learn how to install Docker on Ubuntu 18.04.

Prerequisites

Before we begin, make sure you have a user account with sudo privileges. If you don't have one, create one using the following command

sudo adduser your_username

After adding the user account, add the user to the sudo group using the following command

sudo usermod -aG sudo your_username

Step 1: Update the system

Before installing any new package, it's always a good practice to update the system. Run the following command to update the system

sudo apt-get update

Step 2: Install Docker

To install Docker on Ubuntu, follow the steps below,

Add the Docker GPG key using the following command

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

Add the Docker repository to the apt sources list using the following command

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

Update the apt package list to include the newly added repository.

sudo apt-get update

Finally, install Docker CE (Community Edition) using the following command

sudo apt-get install docker-ce

Step 3: Verify the installation

After the installation is complete, you can verify it using the following command

sudo docker run hello-world

This command will download a test image and run it in a container. If everything works fine, you should see a message indicating that Docker is installed and working correctly.

Step 4: Manage Docker as a non-root user

By default, the Docker daemon runs as the root user. It's not recommended to run Docker as a root user because it can cause security issues. To avoid this, you can manage Docker as a non-root user.

Add your user to the docker group using the following command

sudo usermod -aG docker your_username

Log out and log back in to apply the changes.

Verify that you can run Docker commands without sudo

docker run hello-world

Conclusion

In this article, we learned how to install Docker on Ubuntu 18.04. We also learned how to verify the installation and manage Docker as a non-root user. Docker is a powerful tool that can simplify the deployment of applications and improve the efficiency of your development environment. With Docker, you can easily create isolated environments for your applications and ensure that they run consistently across different platforms.


How to install Docker on Ubuntu 20.04?

Comments

Post a Comment

Comments are always welcome, that will help us to motivate ourselves and improve our services. Thanks!!

Popular posts from this blog

How to update build number in Azure DevOps pipeline?

Azure DevOps Pipelines are an essential part of any software development process . They allow you to build, test, and deploy your application automatically, providing you with a continuous integration and deployment (CI/CD) solution that ensures your code is always up-to-date and ready to be shipped. One crucial element of any build process is the build number. This number uniquely identifies each build, making it easy to track changes and ensure that you're always using the latest version of your software. In this blog post, we'll take a look at the command to update the build number on an Azure DevOps Pipeline. What is the Build Number? The build number is a unique identifier for each build that's created in your pipeline. It's typically a combination of the pipeline name and a unique number that increments with each build. The build number is essential for tracking changes and ensuring that you're always using the latest version of your software. Why Update the B...
Read more

How to get latest build ID from Azure DevOps pipeline?

Azure Pipelines is a cloud-based service that allows you to continuously build, test, and deploy your applications . It provides a wide range of features to support continuous integration and continuous delivery (CI/CD) workflows. One of the essential features of Azure Pipelines is the ability to retrieve the latest build ID programmatically. In this blog post, we will explore how to get the latest build ID from an Azure Pipeline. Firstly, let's understand what a build ID is. A build ID is a unique identifier assigned to each build in Azure Pipelines . It is used to track the status and progress of a particular build. The build ID is generated automatically and is incremented for each new build. It is essential to know the latest build ID to retrieve the artifacts produced by the build or to trigger the next build in the pipeline. Now let's dive into the steps to get the latest build ID from an Azure Pipeline programmatically: Step 1: Create a Personal Access Token (PAT) To ret...
Read more

How to install AWS System Manager (SSM) Agent on windows using PowerShell?

Image
Welcome to itscloudhub!! In the previous post, we were looked how to install AWS SSM Agent on Linux Distribution. In this blog post, we will discuss how to install AWS SSM Agent on Windows machine. https://www.itscloudhub.com/2022/03/how-to-install-aws-system-manager-ssm.html AWS Systems Manager Agent (SSM Agent) is preinstalled, by default, on the following Amazon Machine Images (AMIs): 1. Windows Server 2008-2012 R2 AMIs published in November 2016 or later 2. Windows Server 2016, 2019, and 2022 If your managed instance is a Windows Server 2008-2012 R2 instance created before November 2016, then EC2Config processes Systems Manager requests on your instance. We recommend that you upgrade your existing instances to use the latest version of EC2Config . By using the latest EC2Config installer, you install SSM Agent side-by-side with EC2Config. This side-by-side version of SSM Agent is compatible with your instances created from earlier Windows Server AMIs and allows you to use SSM fe...
Read more