--- description: Instructions for installing Docker Engine on Ubuntu keywords: requirements, apt, installation, ubuntu, install, uninstall, upgrade, update redirect_from: - /ee/docker-ee/ubuntu/ - /engine/installation/linux/docker-ce/ubuntu/ - /engine/installation/linux/docker-ee/ubuntu/ - /engine/installation/linux/ubuntu/ - /engine/installation/linux/ubuntulinux/ - /engine/installation/ubuntulinux/ - /install/linux/docker-ce/ubuntu/ - /install/linux/docker-ee/ubuntu/ - /install/linux/ubuntu/ - /installation/ubuntulinux/ title: Install Docker Engine on Ubuntu toc_max: 4 --- > **Docker Desktop for Linux** > > Docker Desktop helps you build, share, and run containers easily on Mac and > Windows as you do on Linux. We are excited to share that Docker Desktop for > Linux is now GA. For more information, see [Docker Desktop for Linux](../../desktop/install/linux-install.md). {: .important} To get started with Docker Engine on Ubuntu, make sure you [meet the prerequisites](#prerequisites), then [install Docker](#installation-methods). ## Prerequisites ### OS requirements To install Docker Engine, you need the 64-bit version of one of these Ubuntu versions: - Ubuntu Jammy 22.04 (LTS) - Ubuntu Impish 21.10 - Ubuntu Focal 20.04 (LTS) - Ubuntu Bionic 18.04 (LTS) Docker Engine is supported on `x86_64` (or `amd64`), `armhf`, `arm64`, and `s390x` architectures. ### Uninstall old versions Older versions of Docker were called `docker`, `docker.io`, or `docker-engine`. If these are installed, uninstall them: ```console $ sudo apt-get remove docker docker-engine docker.io containerd runc ``` It's OK if `apt-get` reports that none of these packages are installed. The contents of `/var/lib/docker/`, including images, containers, volumes, and networks, are preserved. If you do not need to save your existing data, and want to start with a clean installation, refer to the [uninstall Docker Engine](#uninstall-docker-engine) section at the bottom of this page. ## Installation methods You can install Docker Engine in different ways, depending on your needs: - Most users [set up Docker's repositories](#install-using-the-repository) and install from them, for ease of installation and upgrade tasks. This is the recommended approach. - Some users download the DEB package and [install it manually](#install-from-a-package) and manage upgrades completely manually. This is useful in situations such as installing Docker on air-gapped systems with no access to the internet. - In testing and development environments, some users choose to use automated [convenience scripts](#install-using-the-convenience-script) to install Docker. ### Install using the repository Before you install Docker Engine for the first time on a new host machine, you need to set up the Docker repository. Afterward, you can install and update Docker from the repository. #### Set up the repository {% assign download-url-base = "https://download.docker.com/linux/ubuntu" %} 1. Update the `apt` package index and install packages to allow `apt` to use a repository over HTTPS: ```console $ sudo apt-get update $ sudo apt-get install \ ca-certificates \ curl \ gnupg \ lsb-release ``` 2. Add Docker's official GPG key: ```console $ sudo mkdir -p /etc/apt/keyrings $ curl -fsSL {{ download-url-base }}/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg ``` 3. Use the following command to set up the repository: ```console $ echo \ "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] {{ download-url-base }} \ $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null ``` #### Install Docker Engine 1. Update the `apt` package index, and install the _latest version_ of Docker Engine, containerd, and Docker Compose, or go to the next step to install a specific version: ```console $ sudo apt-get update $ sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin ``` > Receiving a GPG error when running `apt-get update`? > > Your default umask may not be set correctly, causing the public key file > for the repo to not be detected. Run the following command and then try to > update your repo again: `sudo chmod a+r /etc/apt/keyrings/docker.gpg`. 2. To install a _specific version_ of Docker Engine, list the available versions in the repo, then select and install: a. List the versions available in your repo: ```console $ apt-cache madison docker-ce docker-ce | 5:20.10.16~3-0~ubuntu-jammy | https://download.docker.com/linux/ubuntu jammy/stable amd64 Packages docker-ce | 5:20.10.15~3-0~ubuntu-jammy | https://download.docker.com/linux/ubuntu jammy/stable amd64 Packages docker-ce | 5:20.10.14~3-0~ubuntu-jammy | https://download.docker.com/linux/ubuntu jammy/stable amd64 Packages docker-ce | 5:20.10.13~3-0~ubuntu-jammy | https://download.docker.com/linux/ubuntu jammy/stable amd64 Packages ``` b. Install a specific version using the version string from the second column, for example, `5:20.10.16~3-0~ubuntu-jammy`. ```console $ sudo apt-get install docker-ce= docker-ce-cli= containerd.io docker-compose-plugin ``` 3. Verify that Docker Engine is installed correctly by running the `hello-world` image. ```console $ sudo service docker start $ sudo docker run hello-world ``` This command downloads a test image and runs it in a container. When the container runs, it prints a message and exits. Docker Engine is installed and running. The `docker` group is created but no users are added to it. You need to use `sudo` to run Docker commands. Continue to [Linux postinstall](linux-postinstall.md) to allow non-privileged users to run Docker commands and for other optional configuration steps. #### Upgrade Docker Engine To upgrade Docker Engine, first run `sudo apt-get update`, then follow the [installation instructions](#install-using-the-repository), choosing the new version you want to install. ### Install from a package If you cannot use Docker's repository to install Docker Engine, you can download the `.deb` file for your release and install it manually. You need to download a new file each time you want to upgrade Docker. 1. Go to [`{{ download-url-base }}/dists/`]({{ download-url-base }}/dists/){: target="_blank" rel="noopener" class="_" }, choose your Ubuntu version, then browse to `pool/stable/`, choose `amd64`, `armhf`, `arm64`, or `s390x`, and download the `.deb` file for the Docker Engine version you want to install. 2. Install Docker Engine, changing the path below to the path where you downloaded the Docker package. ```console $ sudo dpkg -i /path/to/package.deb ``` The Docker daemon starts automatically. 3. Verify that Docker Engine is installed correctly by running the `hello-world` image. ```console $ sudo service docker start $ sudo docker run hello-world ``` This command downloads a test image and runs it in a container. When the container runs, it prints a message and exits. Docker Engine is installed and running. The `docker` group is created but no users are added to it. You need to use `sudo` to run Docker commands. Continue to [Post-installation steps for Linux](linux-postinstall.md) to allow non-privileged users to run Docker commands and for other optional configuration steps. #### Upgrade Docker Engine To upgrade Docker Engine, download the newer package file and repeat the [installation procedure](#install-from-a-package), pointing to the new file. {% include install-script.md %} ## Uninstall Docker Engine 1. Uninstall the Docker Engine, CLI, Containerd, and Docker Compose packages: ```console $ sudo apt-get purge docker-ce docker-ce-cli containerd.io docker-compose-plugin ``` 2. Images, containers, volumes, or customized configuration files on your host are not automatically removed. To delete all images, containers, and volumes: ```console $ sudo rm -rf /var/lib/docker $ sudo rm -rf /var/lib/containerd ``` You must delete any edited configuration files manually. ## Next steps - Continue to [Post-installation steps for Linux](linux-postinstall.md). - Review the topics in [Develop with Docker](../../develop/index.md) to learn how to build new applications using Docker.