An open-source project that automates the deployment of software applications inside containers by providing an additional layer of abstraction and automation of OS-level virtualization on Linux.
To install Docker Engine, you need the 64-bit version of one of these Ubuntu versions:
Docker Engine for Ubuntu is compatible with x86_64 (or amd64), armhf, arm64, s390x, and ppc64le (ppc64el) architectures.
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.
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
sudo install -m 0755 -d /etc/apt/keyrings curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg sudo chmod a+r /etc/apt/keyrings/docker.gpg
echo \ "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \ "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \ sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
Note
If you use an Ubuntu derivative distro, such as Linux Mint, you may need to use
UBUNTU_CODENAME
instead ofVERSION_CODENAME
.
apt
package index:sudo apt-get update
To install the latest version, run:
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
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.
To install a specific version of Docker Engine, start by listing the available versions in the repository:
# List the available versions: apt-cache madison docker-ce | awk '{ print $3 }' 5:24.0.0-1~ubuntu.22.04~jammy 5:23.0.6-1~ubuntu.22.04~jammy <...>
Select the desired version and install:
VERSION_STRING=5:24.0.0-1~ubuntu.22.04~jammy sudo apt-get install docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING containerd.io docker-buildx-plugin docker-compose-plugin
hello-world
image.sudo docker run hello-world
Tip
Receiving errors when trying to run without root?
The
docker
user group exists but contains no users, which is why you’re required to usesudo
to run Docker commands. Continue to Linux postinstall to allow non-privileged users to run Docker commands and for other optional configuration steps.
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.
Go to https://download.docker.com/linux/ubuntu/dists/
open_in_new.
Select your Ubuntu version in the list.
Go to pool/stable/
and select the applicable architecture (amd64
, armhf
, arm64
, or s390x
).
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
Install the .deb
packages. Update the paths in the following example to where you downloaded the Docker packages.
sudo dpkg -i ./containerd.io__.deb \ ./docker-ce__.deb \ ./docker-ce-cli__.deb \ ./docker-buildx-plugin__.deb \ ./docker-compose-plugin__.deb
hello-world
image.sudo service docker start sudo docker run hello-world
Tip
Receiving errors when trying to run without root?
The
docker
user group exists but contains no users, which is why you’re required to usesudo
to run Docker commands. Continue to Linux postinstall to allow non-privileged users to run Docker commands and for other optional configuration steps.
To upgrade Docker Engine, download the newer package files and repeat the installation procedure, pointing to the new files.
Docker provides a convenience script at https://get.docker.com/open_in_new to install Docker into development environments non-interactively. The convenience script isn’t recommended for production environments, but it’s useful for creating a provisioning script tailored to your needs. Also refer to the install using the repository steps to learn about installation steps to install using the package repository. The source code for the script is open source, and you can find it in the docker-install
repository on GitHubopen_in_new.
Always examine scripts downloaded from the internet before running them locally. Before installing, make yourself familiar with potential risks and limitations of the convenience script:
root
or sudo
privileges to run.Tip: preview script steps before running
You can run the script with the --dry-run
option to learn what steps the script will run when invoked:
curl -fsSL https://get.docker.com -o get-docker.sh sudo sh ./get-docker.sh --dry-run
This example downloads the script from https://get.docker.com/open_in_new and runs it to install the latest stable release of Docker on Linux:
curl -fsSL https://get.docker.com -o get-docker.sh sudo sh get-docker.sh Executing docker install script, commit: 7cae5f8b0decc17d6571f9f52eb840fbc13b2737 <...>
Use Docker as a non-privileged user, or install in rootless mode?
The installation script requires
root
orsudo
privileges to install and use Docker. If you want to grant non-root users access to Docker, refer to the post-installation steps for Linux. You can also install Docker withoutroot
privileges, or configured to run in rootless mode. For instructions on running Docker in rootless mode, refer to run the Docker daemon as a non-root user (rootless mode).
Docker also provides a convenience script at https://test.docker.com/open_in_new to install pre-releases of Docker on Linux. This script is equal to the script at get.docker.com
, but configures your package manager to use the test channel of the Docker package repository. The test channel includes both stable and pre-releases (beta versions, release-candidates) of Docker. Use this script to get early access to new releases, and to evaluate them in a testing environment before they’re released as stable.
To install the latest version of Docker on Linux from the test channel, run:
curl -fsSL https://test.docker.com -o test-docker.sh sudo sh test-docker.sh
If you installed Docker using the convenience script, you should upgrade Docker using your package manager directly. There’s no advantage to re-running the convenience script. Re-running it can cause issues if it attempts to re-install repositories which already exist on the host machine.
sudo apt-get purge docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin docker-ce-rootless-extras
sudo rm -rf /var/lib/docker sudo rm -rf /var/lib/containerd
You have to delete any edited configuration files manually.