--- description: Instructions for installing Docker CE on Ubuntu keywords: requirements, apt, installation, ubuntu, install, uninstall, upgrade, update redirect_from: - /engine/installation/ubuntulinux/ - /installation/ubuntulinux/ - /engine/installation/linux/ubuntulinux/ - /engine/installation/linux/docker-ce/ubuntu/ - /install/linux/ubuntu/ - /engine/installation/linux/ubuntu/ title: Get Docker CE for Ubuntu toc_max: 4 --- To get started with Docker CE on Ubuntu, make sure you [meet the prerequisites](#prerequisites), then [install Docker](#install-docker-ce). ## Prerequisites ### Docker EE customers To install Docker Enterprise Edition (Docker EE), go to [Get Docker EE for Ubuntu](/install/linux/docker-ee/ubuntu.md) **instead of this topic**. To learn more about Docker EE, see [Docker Enterprise Edition](https://www.docker.com/enterprise-edition/){: target="_blank" class="_" }. ### OS requirements To install Docker CE, you need the 64-bit version of one of these Ubuntu versions: - Cosmic 18.10 - Bionic 18.04 (LTS) - Xenial 16.04 (LTS) Docker CE is supported on `x86_64` (or `amd64`), `armhf`, `arm64`, `s390x` (IBM Z), and `ppc64le` (IBM Power) architectures. ### Uninstall old versions Older versions of Docker were called `docker`, `docker.io `, or `docker-engine`. If these are installed, uninstall them: ```bash $ 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. The Docker CE package is now called `docker-ce`. ### Supported storage drivers Docker CE on Ubuntu supports `overlay2`, `aufs` and `btrfs` storage drivers. > **Note**: In Docker Engine - Enterprise, `btrfs` is only supported on SLES. See the documentation on > [btrfs](/engine/userguide/storagedriver/btrfs-driver.md) for more details. For new installations on version 4 and higher of the Linux kernel, `overlay2` is supported and preferred over `aufs`. Docker CE uses the `overlay2` storage driver by default. If you need to use `aufs` instead, you need to configure it manually. See [aufs](/engine/userguide/storagedriver/aufs-driver.md) ## Install Docker CE You can install Docker CE 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 CE 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: ```bash $ sudo apt-get update ``` 2. Install packages to allow `apt` to use a repository over HTTPS: ```bash $ sudo apt-get install \ apt-transport-https \ ca-certificates \ curl \ gnupg-agent \ software-properties-common ``` 3. Add Docker's official GPG key: ```bash $ curl -fsSL {{ download-url-base }}/gpg | sudo apt-key add - ``` Verify that you now have the key with the fingerprint `9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88`, by searching for the last 8 characters of the fingerprint. ```bash $ sudo apt-key fingerprint 0EBFCD88 pub rsa4096 2017-02-22 [SCEA] 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88 uid [ unknown] Docker Release (CE deb) sub rsa4096 2017-02-22 [S] ``` 4. Use the following command to set up the **stable** repository. To add the **nightly** or **test** repository, add the word `nightly` or `test` (or both) after the word `stable` in the commands below. [Learn about **nightly** and **test** channels](/install/index.md). > **Note**: The `lsb_release -cs` sub-command below returns the name of your > Ubuntu distribution, such as `xenial`. Sometimes, in a distribution > like Linux Mint, you might need to change `$(lsb_release -cs)` > to your parent Ubuntu distribution. For example, if you are using > `Linux Mint Tessa`, you could use `bionic`. Docker does not offer any guarantees on untested > and unsupported Ubuntu distributions.
```bash $ sudo add-apt-repository \ "deb [arch=amd64] {{ download-url-base }} \ $(lsb_release -cs) \ stable" ```
```bash $ sudo add-apt-repository \ "deb [arch=armhf] {{ download-url-base }} \ $(lsb_release -cs) \ stable" ```
```bash $ sudo add-apt-repository \ "deb [arch=arm64] {{ download-url-base }} \ $(lsb_release -cs) \ stable" ```
```bash $ sudo add-apt-repository \ "deb [arch=ppc64el] {{ download-url-base }} \ $(lsb_release -cs) \ stable" ```
```bash $ sudo add-apt-repository \ "deb [arch=s390x] {{ download-url-base }} \ $(lsb_release -cs) \ stable" ```
#### Install Docker CE 1. Update the `apt` package index. ```bash $ sudo apt-get update ``` 2. Install the _latest version_ of Docker CE and containerd, or go to the next step to install a specific version: ```bash $ sudo apt-get install docker-ce docker-ce-cli containerd.io ``` > Got multiple Docker repositories? > > If you have multiple Docker repositories enabled, installing > or updating without specifying a version in the `apt-get install` or > `apt-get update` command always installs the highest possible version, > which may not be appropriate for your stability needs. 3. To install a _specific version_ of Docker CE, list the available versions in the repo, then select and install: a. List the versions available in your repo: ```bash $ apt-cache madison docker-ce docker-ce | 5:18.09.1~3-0~ubuntu-xenial | {{ download-url-base }} xenial/stable amd64 Packages docker-ce | 5:18.09.0~3-0~ubuntu-xenial | {{ download-url-base }} xenial/stable amd64 Packages docker-ce | 18.06.1~ce~3-0~ubuntu | {{ download-url-base }} xenial/stable amd64 Packages docker-ce | 18.06.0~ce~3-0~ubuntu | {{ download-url-base }} xenial/stable amd64 Packages ... ``` b. Install a specific version using the version string from the second column, for example, `5:18.09.1~3-0~ubuntu-xenial`. ```bash $ sudo apt-get install docker-ce= docker-ce-cli= containerd.io ``` 4. Verify that Docker CE is installed correctly by running the `hello-world` image. ```bash $ sudo docker run hello-world ``` This command downloads a test image and runs it in a container. When the container runs, it prints an informational message and exits. Docker CE 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](/install/linux/linux-postinstall.md) to allow non-privileged users to run Docker commands and for other optional configuration steps. #### Upgrade Docker CE To upgrade Docker CE, first run `sudo apt-get update`, then follow the [installation instructions](#install-docker-ce), choosing the new version you want to install. ### Install from a package If you cannot use Docker's repository to install Docker CE, 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" class="_" }, choose your Ubuntu version, browse to `pool/stable/`, choose `amd64`, `armhf`, `arm64`, `ppc64el`, or `s390x`, and download the `.deb` file for the Docker CE version you want to install. > **Note**: To install a **nightly** package, change the word > `stable` in the URL to `nightly`. > [Learn about **nightly** and **test** channels](/install/index.md). 2. Install Docker CE, changing the path below to the path where you downloaded the Docker package. ```bash $ sudo dpkg -i /path/to/package.deb ``` The Docker daemon starts automatically. 3. Verify that Docker CE is installed correctly by running the `hello-world` image. ```bash $ sudo docker run hello-world ``` This command downloads a test image and runs it in a container. When the container runs, it prints an informational message and exits. Docker CE 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](/install/linux/linux-postinstall.md) to allow non-privileged users to run Docker commands and for other optional configuration steps. #### Upgrade Docker CE To upgrade Docker CE, 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 CE 1. Uninstall the Docker CE package: ```bash $ sudo apt-get purge docker-ce ``` 2. Images, containers, volumes, or customized configuration files on your host are not automatically removed. To delete all images, containers, and volumes: ```bash $ sudo rm -rf /var/lib/docker ``` You must delete any edited configuration files manually. ## Next steps - Continue to [Post-installation steps for Linux](/install/linux/linux-postinstall.md) - Continue with the [User Guide](/get-started/index.md).