mirror of https://github.com/docker/docs.git
240 lines
8.3 KiB
Markdown
240 lines
8.3 KiB
Markdown
---
|
|
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=<VERSION_STRING> docker-ce-cli=<VERSION_STRING> containerd.io docker-compose-plugin
|
|
```
|
|
|
|
3. Verify that Docker Engine is installed correctly by running the `hello-world`
|
|
image.
|
|
|
|
```console
|
|
$ 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 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.
|