mirror of https://github.com/docker/docs.git
265 lines
9.3 KiB
Markdown
265 lines
9.3 KiB
Markdown
---
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description: Instructions for installing Docker Engine on Ubuntu
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keywords: requirements, apt, installation, ubuntu, install, uninstall, upgrade, update
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redirect_from:
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- /ee/docker-ee/ubuntu/
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- /engine/installation/linux/docker-ce/ubuntu/
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- /engine/installation/linux/docker-ee/ubuntu/
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- /engine/installation/linux/ubuntu/
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- /engine/installation/linux/ubuntulinux/
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- /engine/installation/ubuntulinux/
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- /install/linux/docker-ce/ubuntu/
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- /install/linux/docker-ee/ubuntu/
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- /install/linux/ubuntu/
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- /installation/ubuntulinux/
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title: Install Docker Engine on Ubuntu
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toc_max: 4
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---
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> **Docker Desktop for Linux**
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>
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> Docker Desktop helps you build, share, and run containers easily on Mac and
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> Windows as you do on Linux. We are excited to share that Docker Desktop for
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> Linux (Beta) is now available for you to test. For more information, see
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[Docker Desktop for Linux](../../desktop/linux/index.md).
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{: .important}
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To get started with Docker Engine on Ubuntu, make sure you
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[meet the prerequisites](#prerequisites), then
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[install Docker](#installation-methods).
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## Prerequisites
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### OS requirements
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To install Docker Engine, you need the 64-bit version of one of these Ubuntu
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versions:
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- Ubuntu Impish 21.10
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- Ubuntu Hirsute 21.04
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- Ubuntu Focal 20.04 (LTS)
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- Ubuntu Bionic 18.04 (LTS)
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Docker Engine is supported on `x86_64` (or `amd64`), `armhf`, `arm64`, and `s390x` architectures.
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> Ubuntu 16.04 LTS "Xenial Xerus" end-of-life
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>
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> Ubuntu Linux 16.04 LTS reached the end of its five-year LTS window on April
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> 30th 2021 and is no longer supported. Docker no longer releases packages for
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> this distribution (including patch- and security releases). Users running
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> Docker on Ubuntu 16.04 are recommended to update their system to a currently
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> supported LTS version of Ubuntu.
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{: .important }
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### Uninstall old versions
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Older versions of Docker were called `docker`, `docker.io`, or `docker-engine`.
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If these are installed, uninstall them:
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```console
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$ sudo apt-get remove docker docker-engine docker.io containerd runc
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```
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It's OK if `apt-get` reports that none of these packages are installed.
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The contents of `/var/lib/docker/`, including images, containers, volumes, and
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networks, are preserved. If you do not need to save your existing data, and want to
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start with a clean installation, refer to the [uninstall Docker Engine](#uninstall-docker-engine)
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section at the bottom of this page.
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### Supported storage drivers
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Docker Engine on Ubuntu supports `overlay2`, `aufs` and `btrfs` storage drivers.
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Docker Engine uses the `overlay2` storage driver by default. If you need to use
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`aufs` instead, you need to configure it manually.
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See [use the AUFS storage driver](../../storage/storagedriver/aufs-driver.md)
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## Installation methods
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You can install Docker Engine in different ways, depending on your needs:
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- Most users
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[set up Docker's repositories](#install-using-the-repository) and install
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from them, for ease of installation and upgrade tasks. This is the
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recommended approach.
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- Some users download the DEB package and
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[install it manually](#install-from-a-package) and manage
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upgrades completely manually. This is useful in situations such as installing
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Docker on air-gapped systems with no access to the internet.
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- In testing and development environments, some users choose to use automated
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[convenience scripts](#install-using-the-convenience-script) to install Docker.
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### Install using the repository
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Before you install Docker Engine for the first time on a new host machine, you need
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to set up the Docker repository. Afterward, you can install and update Docker
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from the repository.
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#### Set up the repository
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{% assign download-url-base = "https://download.docker.com/linux/ubuntu" %}
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1. Update the `apt` package index and install packages to allow `apt` to use a
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repository over HTTPS:
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```console
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$ sudo apt-get update
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$ sudo apt-get install \
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ca-certificates \
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curl \
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gnupg \
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lsb-release
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```
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2. Add Docker's official GPG key:
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```console
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$ curl -fsSL {{ download-url-base }}/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
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```
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3. Use the following command to set up the **stable** repository. To add the
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**nightly** or **test** repository, add the word `nightly` or `test` (or both)
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after the word `stable` in the commands below. [Learn about **nightly** and **test** channels](index.md).
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```console
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$ echo \
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"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] {{ download-url-base }} \
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$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
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```
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#### Install Docker Engine
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1. Update the `apt` package index, and install the _latest version_ of Docker
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Engine and containerd, or go to the next step to install a specific version:
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```console
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$ sudo apt-get update
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$ sudo apt-get install docker-ce docker-ce-cli containerd.io
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```
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> Got multiple Docker repositories?
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>
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> If you have multiple Docker repositories enabled, installing
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> or updating without specifying a version in the `apt-get install` or
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> `apt-get update` command always installs the highest possible version,
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> which may not be appropriate for your stability needs.
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2. To install a _specific version_ of Docker Engine, list the available versions
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in the repo, then select and install:
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a. List the versions available in your repo:
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```console
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$ apt-cache madison docker-ce
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docker-ce | 5:18.09.1~3-0~ubuntu-xenial | {{ download-url-base }} xenial/stable amd64 Packages
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docker-ce | 5:18.09.0~3-0~ubuntu-xenial | {{ download-url-base }} xenial/stable amd64 Packages
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docker-ce | 18.06.1~ce~3-0~ubuntu | {{ download-url-base }} xenial/stable amd64 Packages
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docker-ce | 18.06.0~ce~3-0~ubuntu | {{ download-url-base }} xenial/stable amd64 Packages
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```
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b. Install a specific version using the version string from the second column,
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for example, `5:18.09.1~3-0~ubuntu-xenial`.
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```console
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$ sudo apt-get install docker-ce=<VERSION_STRING> docker-ce-cli=<VERSION_STRING> containerd.io
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```
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3. Verify that Docker Engine is installed correctly by running the `hello-world`
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image.
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```console
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$ sudo docker run hello-world
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```
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This command downloads a test image and runs it in a container. When the
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container runs, it prints a message and exits.
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Docker Engine is installed and running. The `docker` group is created but no users
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are added to it. You need to use `sudo` to run Docker commands.
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Continue to [Linux postinstall](linux-postinstall.md) to allow non-privileged
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users to run Docker commands and for other optional configuration steps.
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#### Upgrade Docker Engine
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To upgrade Docker Engine, first run `sudo apt-get update`, then follow the
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[installation instructions](#install-using-the-repository), choosing the new
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version you want to install.
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### Install from a package
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If you cannot use Docker's repository to install Docker Engine, you can download the
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`.deb` file for your release and install it manually. You need to download
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a new file each time you want to upgrade Docker.
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1. Go to [`{{ download-url-base }}/dists/`]({{ download-url-base }}/dists/){: target="_blank" rel="noopener" class="_" },
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choose your Ubuntu version, then browse to `pool/stable/`, choose `amd64`,
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`armhf`, `arm64`, or `s390x`, and download the `.deb` file for the Docker Engine
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version you want to install.
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> **Note**
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>
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> To install a **nightly** or **test** (pre-release) package,
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> change the word `stable` in the above URL to `nightly` or `test`.
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> [Learn about **nightly** and **test** channels](index.md).
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2. Install Docker Engine, changing the path below to the path where you downloaded
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the Docker package.
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```console
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$ sudo dpkg -i /path/to/package.deb
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```
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The Docker daemon starts automatically.
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3. Verify that Docker Engine is installed correctly by running the `hello-world`
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image.
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```console
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$ sudo docker run hello-world
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```
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This command downloads a test image and runs it in a container. When the
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container runs, it prints a message and exits.
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Docker Engine is installed and running. The `docker` group is created but no users
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are added to it. You need to use `sudo` to run Docker commands.
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Continue to [Post-installation steps for Linux](linux-postinstall.md) to allow
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non-privileged users to run Docker commands and for other optional configuration
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steps.
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#### Upgrade Docker Engine
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To upgrade Docker Engine, download the newer package file and repeat the
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[installation procedure](#install-from-a-package), pointing to the new file.
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{% include install-script.md %}
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## Uninstall Docker Engine
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1. Uninstall the Docker Engine, CLI, and Containerd packages:
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```console
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$ sudo apt-get purge docker-ce docker-ce-cli containerd.io
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```
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2. Images, containers, volumes, or customized configuration files on your host
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are not automatically removed. To delete all images, containers, and
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volumes:
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```console
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$ sudo rm -rf /var/lib/docker
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$ sudo rm -rf /var/lib/containerd
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```
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You must delete any edited configuration files manually.
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## Next steps
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- Continue to [Post-installation steps for Linux](linux-postinstall.md).
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- Review the topics in [Develop with Docker](../../develop/index.md) to learn how to build new applications using Docker.
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