docs/engine/install/ubuntu.md

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Jumpstart your client-side server applications with Docker Engine on Ubuntu. This guide details prerequisites and multiple methods to install.	docker install script, ubuntu docker server, ubuntu server docker, install docker engine ubuntu, install docker on ubuntu server, ubuntu 18.04 docker-ce, install docker engine on ubuntu, ubuntu install docker ce, ubuntu install docker engine	/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/	Install Docker Engine on Ubuntu	4

To get started with Docker Engine on Ubuntu, make sure you meet the prerequisites, then install Docker.

Prerequisites

OS requirements

To install Docker Engine, you need the 64-bit version of one of these Ubuntu versions:

• Ubuntu Kinetic 22.10
• Ubuntu Jammy 22.04 (LTS)
• Ubuntu Focal 20.04 (LTS)
• Ubuntu Bionic 18.04 (LTS)

Docker Engine is compatible with x86_64 (or amd64), armhf, arm64, and s390x architectures.

Uninstall old versions

Older versions of Docker went by the names of docker, docker.io, or docker-engine. Uninstall any such older versions before attempting to install a new version:

$ 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.

Images, containers, volumes, and networks stored in /var/lib/docker/ aren't automatically removed when you uninstall Docker. If you want to start with a clean installation, and prefer to clean up any existing data, refer to the uninstall Docker Engine section.

Installation methods

You can install Docker Engine in different ways, depending on your needs:

• Docker Engine comes bundled with Docker Desktop for Linux. This is the easiest and quickest way to get started.

• You can also set up and install Docker Engine from Docker's apt repository.

• Install it manually and manage upgrades manually.

• Using a convenience scripts. Only recommended for testing and development environments.

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:

   $ sudo apt-get update
   
   $ sudo apt-get install \
       ca-certificates \
       curl \
       gnupg \
       lsb-release
   

2. Add Docker's official GPG key:

   $ sudo mkdir -m 0755 -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:

   $ 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:

   $ sudo apt-get update
   

   Receiving a GPG error when running apt-get update?

   Your default umask{: target="blank" rel="noopener" } may be incorrectly configured, preventing detection of the repository public key file. Try granting read permission for the Docker public key file before updating the package index:

   $ sudo chmod a+r /etc/apt/keyrings/docker.gpg
   $ sudo apt-get update
   

2. Install Docker Engine, containerd, and Docker Compose.

   • Latest
   • Specific version
   
   

   To install the latest version, run:

    $ sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
   

   To install a specific version of Docker Engine, start by list the available versions in the repository:

   # List the available versions:
   $ apt-cache madison docker-ce | awk '{ print $3 }'
   
   5:20.10.16~3-0~ubuntu-jammy
   5:20.10.15~3-0~ubuntu-jammy
   5:20.10.14~3-0~ubuntu-jammy
   5:20.10.13~3-0~ubuntu-jammy
   

   Select the desired version and install:

   $ VERSION_STRING=5:20.10.13~3-0~ubuntu-jammy
   $ sudo apt-get install docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING containerd.io docker-buildx-plugin docker-compose-plugin
   

   ---

3. Verify that the Docker Engine installation is successful by running the hello-world image:

   $ sudo docker run hello-world
   

   This command downloads a test image and runs it in a container. When the container runs, it prints a confirmation message and exits.

You have now successfully installed and started Docker Engine. The docker user group exists but contains no users, which is why you're required to use sudo to run Docker commands. Continue to Linux post-install to allow non-privileged users to run Docker commands and for other optional configuration steps.

Upgrade Docker Engine

To upgrade Docker Engine, follow the installation instructions, choosing the new version you want to install.

Install from a package

If you can't use Docker's apt 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 Engine.

1. Go to [{{ download-url-base }}/dists/]({{ download-url-base }}/dists/){: target="blank" rel="noopener" class="" }.

2. Select your Ubuntu version in the list.

3. Go to pool/stable/ and select the applicable architecture (amd64, armhf, arm64, or s390x).

4. Download the following deb files for the Docker Engine, CLI, containerd, and Docker Compose packages:

   • containerd.io_<version>_<arch>.deb
   • docker-ce_<version>_<arch>.deb
   • docker-ce-cli_<version>_<arch>.deb
   • docker-buildx-plugin_<version>_<arch>.deb
   • docker-compose-plugin_<version>_<arch>.deb

5. Install the .deb packages. Update the paths in the following example to where you downloaded the Docker packages.

   $ sudo dpkg -i ./containerd.io_<version>_<arch>.deb \
     ./docker-ce_<version>_<arch>.deb \
     ./docker-ce-cli_<version>_<arch>.deb \
     ./docker-buildx-plugin_<version>_<arch>.deb \
     ./docker-compose-plugin_<version>_<arch>.deb
   

   The Docker daemon starts automatically.

6. Verify that the Docker Engine installation is successful by running the hello-world image:

   $ 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 confirmation message and exits.

You have now successfully installed and started Docker Engine. The docker user group exists but contains no users, which is why you're required to use sudo to run Docker commands. Continue to Linux post-install 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, pointing to the new file.

{% include install-script.md %}

Uninstall Docker Engine

1. Uninstall the Docker Engine, CLI, containerd, and Docker Compose packages:

   $ sudo apt-get purge docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extras
   

2. Images, containers, volumes, or custom configuration files on your host aren't automatically removed. To delete all images, containers, and volumes:

   $ 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.
• Review the topics in Develop with Docker to learn how to build new applications using Docker.