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Docker Engine-Community supports the following Ubuntu versions: * Xenial 16.04 (LTS) * Bionic 18.04 (LTS) * Cosmic 18.10 * Disco 19.04 * Other newer versions... Docker Engine - Community supports the following architectures: x86_64 (or amd64), armhf, arm64, s390x (IBM Z), and ppc64le (IBM Power). * * * ## Automatic Installation Using the Official Installation Script The installation command is as follows: # Download and execute the official Docker installation script curl -fsSL https://get.docker.com -o get-docker.sh sudo sh get-docker.sh # Start the Docker service sudo systemctl start docker sudo systemctl enable docker * * * ## Manual Installation ### Uninstall Old Versions Older versions of Docker were called `docker`, `docker.io`, or `docker-engine`. If any of these are installed, uninstall them: $ sudo apt-get remove docker docker-engine docker.io containerd runc The current package is called Docker Engine-Community (`docker-ce`). To install Docker Engine-Community, two methods are described below. ### Installation Using the Docker Repository Before installing Docker Engine-Community on a new host for the first time, you need to set up the Docker repository. After that, you can install and update Docker from the repository. ### Set Up the Repository Update the `apt` package index. $ sudo apt-get update Install packages to allow `apt` to use a repository over HTTPS: $ sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common Add Docker’s official GPG key: curl -fsSL https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc Use the following command to set up the stable repository: echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu/ $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null sudo apt-get update ### Install Docker Engine-Community Update the `apt` package index. $ sudo apt-get update Install the latest version of Docker Engine-Community and containerd, or go to the next step to install a specific version: $ sudo apt-get install docker-ce docker-ce-cli containerd.io To install a specific version of Docker Engine-Community, list the available versions in the repo, then select one to install. List the versions available in your repo: $ apt-cache madison docker-ce docker-ce |5:18.09.1~3-0~ubuntu-xenial | https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce |5:18.09.0~3-0~ubuntu-xenial | https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 18.06.1~ce~3-0~ubuntu | https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 18.06.0~ce~3-0~ubuntu | https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu xenial/stable amd64 Packages ... Install a specific version using the version string from the second column, for example, `5:18.09.1~3-0~ubuntu-xenial`. $ sudo apt-get install docker-ce= docker-ce-cli= containerd.io Test Docker by running the `hello-world` image. If the following message is printed, the installation was successful: $ sudo docker run hello-world Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world 1b930d010525: Pull complete Digest: sha256:c3b4ada4687bbaa170745b3e4dd8ac3f194ca95b2d0518b417fb47e5879d9b5f Status: Downloaded newer image for hello-world:latest Hello from Docker! This message shows that your installation appears to be working correctly. To generate this message, Docker took the following steps: 1. The Docker client contacted the Docker daemon. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub. (amd64) 3. The Docker daemon created a new container from that image which runs the executable that produces the output you are currently reading. 4. The Docker daemon streamed that output to the Docker client, which sent it to your terminal. To try something more ambitious, you can run an Ubuntu container with: $ docker run -it ubuntu bash Share images, automate workflows, and more with a free Docker ID: https://hub.docker.com/ For more examples and ideas, visit: https://docs.docker.com/get-started/ * * * ## Installation Using Shell Scripts Docker provides convenience scripts at [get.docker.com](https://get.docker.com/) and [test.docker.com](https://test.docker.com/) for installing the edge and testing versions of Docker Engine-Community into development environments quickly and non-interactively. The source code for the scripts is in the docker-install repository. It is not recommended to use these scripts in production environments, and you should understand the potential risks before using them: * The scripts require root or `sudo` privileges. Therefore, you should carefully examine and audit the scripts before running them. * The scripts attempt to detect your Linux distribution and version and configure your package management system for you. In addition, the scripts do not allow you to customize any installation parameters. This may lead to an unsupported configuration, either from Docker's point of view or from your own organization's guidelines and standards. * The scripts install all dependencies and recommendations of the package manager without asking for confirmation. This may install a large number of packages, depending on the current configuration of the host machine. * The script does not provide options to specify which version of Docker to install and installs the latest version that is released on the edge channel. * If Docker is already installed on the host using another mechanism, do not use the convenience scripts. This example uses the script at [get.docker.com](https://get.docker.com/) to install the latest version of Docker Engine-Community on Linux. To install the latest testing version, use `test.docker.com` instead. In each of the commands below, replace each occurrence of `get` with `test`. $ curl -fsSL https://get.docker.com -o get-docker.sh $ sudo sh get-docker.sh If you want to use Docker as a non-root user, you should consider adding your user to the docker group, like so: $ sudo usermod -aG docker your-user ### Uninstalling Docker Remove the package: sudo apt-get purge docker-ce Remove images, containers, volumes, and other configuration data: sudo rm -rf /var/lib/docker