Learn how to install Docker on Ubuntu with this comprehensive step-by-step guide. This tutorial covers everything from updating your system and setting up dependencies to verifying your Docker installation and running your first container. Perfect for both beginners and experienced users looking to set up Docker on Ubuntu efficiently.
20 min
Edited:29-09-2024
how install docker on ubuntu
Learn how to install Docker on Ubuntu with this comprehensive step-by-step guide. This tutorial covers everything from updating your system and setting up dependencies to verifying your Docker installation and running your first container. Perfect for both beginners and experienced users looking to set up Docker on Ubuntu efficiently.
Prerequisites
Ensure you meet the prerequisites. Docker Engine requires the 64-bit version of one of these Ubuntu versions: Ubuntu Noble 24.04 (LTS), Ubuntu Jammy 22.04 (LTS), or Ubuntu Focal 20.04 (LTS). Docker Engine for Ubuntu is compatible with x86_64 (or amd64), armhf, arm64, s390x, and ppc64le (ppc64el) architectures. Also, be aware of firewall limitations if you use ufw or firewalld to manage firewall settings.
Updating the system and installing
Set up Docker's apt repository. Run the following commands:
1. sudo apt-get update
1. sudo apt-get install ca-certificates curl
1. sudo install -m 0755 -d /etc/apt/keyrings
1. sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
1. sudo chmod a+r /etc/apt/keyrings/docker.asc
Add the repository to Apt sources:
1. echo \
2. "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
3. $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
4. sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
1. sudo apt-get update
Install the Docker packages. To install the latest version, run:
1. $ sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
Verify that the Docker Engine installation is successful by running the hello-world image.
1. sudo service docker start
2. sudo docker run hello-world
Docker Engine
Docker is a platform for developing, shipping, and running applications using OS-level virtualization through containers. It simplifies software delivery by separating applications from infrastructure. Key tools include Docker Desktop for managing containers, Docker Engine, Docker Build, Docker Compose, Docker Hub, and Docker Scout.
Docker Engine, the core containerization technology, operates as a client-server application with a daemon (dockerd), APIs, and a command line interface (CLI). It manages Docker objects like images, containers, networks, and volumes. Installation methods for Docker Engine vary by OS, with options for Ubuntu including Docker Desktop, Docker's apt repository, and manual setup.
For windows:
For macOS:
For Linux:
Uninstall Docker Engine
Uninstall the Docker Engine, CLI, containerd, and Docker Compose packages
1. sudo apt-get purge docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extras
Images, containers, volumes, or custom configuration files on your host aren't automatically removed. To delete all images, containers, and volumes:
1. sudo rm -rf /var/lib/docker
2. sudo rm -rf /var/lib/containerd
Docker uses
Docker can be used for a wide range of purposes including: Application Containerization, Microservices Architecture, Continuous Integration/Continuous Deployment (CI/CD), Multi-Environment Testing, Simplified Software Distribution and more
By following this guide, you have successfully installed Docker on your Ubuntu system, empowering you to begin using containerized applications. Docker's powerful platform allows you to develop, ship, and run applications in isolated environments, ensuring consistency across various systems. With Docker now set up, you can start exploring containerization, automating deployments, and optimizing your development workflow. Whether you're managing microservices, setting up a CI/CD pipeline, or experimenting with containers for the first time, Docker opens the door to more efficient software development and deployment practices.
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