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Docker 安装.md

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Docker 安装

NOTE: last update 2019-10-24

参考：Get Docker CE for Ubuntu

OS requirements of Docker CE

To install Docker CE, you need the 64-bit version of one of these Ubuntu versions:

  • Disco 19.04
  • Cosmic 18.10
  • Bionic 18.04 (LTS)
  • Xenial 16.04 (LTS)

Uninstall old versions

Older versions of Docker were called docker or docker-engine. If these are installed, uninstall them:

$ sudo apt-get remove docker docker-engine docker.io containerd runc

The Docker CE package is now called docker-ce.

The contents of /var/lib/docker/, including images, containers, volumes, and networks, are preserved. The Docker Engine - Community package is now called docker-ce.

If you need to use aufs

Docker CE now uses the overlay2 storage driver by default, and it is recommended that you use it instead of aufs. If you need to use aufs, you will need to do additional preparation.

XENIAL 16.04 AND NEWER

For Ubuntu 16.04 and higher, the Linux kernel includes support for OverlayFS, and Docker CE will use the overlay2 storage driver by default. If you need to use aufs instead, you need to configure it manually.

Install Docker CE

You can install Docker CE in different ways, depending on your needs:

  • Most users set up Docker’s repositories 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 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 to install Docker.

推荐第一种

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.

构建 Docker 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://download.docker.com/linux/ubuntu/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.
$ sudo apt-key fingerprint 0EBFCD88

# Use the following command to set up the stable repository.
# for amd64 only
$ sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

安装 Docker CE ；

# Update the apt package index.
$ sudo apt-get update

# Install the latest version of Docker CE, or go to the next step to install a specific version. Any existing installation of Docker is replaced.
$ sudo apt-get install docker-ce docker-ce-cli containerd.io

# On production systems, you should install a specific version of Docker CE instead of always using the latest. This output is truncated. List the available versions.
$ apt-cache madison docker-ce
The contents of the list depend upon which repositories are enabled. Choose a specific version to install.
$ sudo apt-get install docker-ce=<VERSION>

# Verify that Docker CE is installed correctly by running the hello-world image.
$ sudo docker run hello-world

脚本

Ref: https://github.com/moooofly/scaffolding/blob/master/docker_setup.sh