【Linux】Ubuntu 安装 Docker

Posted by 西维蜀黍 on 2020-05-01, Last Modified on 2022-04-05

Installation

Method 1 - Convenience Script

$ curl -fsSL https://get.docker.com -o get-docker.sh
$ sudo sh get-docker.sh
<...>

If you would like to use Docker as a non-root user,

Approach 1

$ sudo sh -eux <<EOF
# Install newuidmap & newgidmap binaries
apt-get install -y uidmap
EOF

$  dockerd-rootless-setuptool.sh install


# To run docker.service on system startup, run: 
$ sudo loginctl enable-linger sw

# Make sure the following environment variables are set (or add them to ~/.bashrc):
export PATH=/usr/bin:$PATH
export DOCKER_HOST=unix:///run/user/1000/docker.sock

# Verify that you can run docker commands without sudo.
$ docker run hello-world

Approach 2

you should now consider adding your user to the “docker” group with something like:

$ sudo usermod -aG docker ${USER}

# 将当前用户切换到docker组中,且立即生效
$ newgrp docker

# Verify that you can run docker commands without sudo.
$ docker run hello-world

Method 2 - Using Repository

Uninstall Docker Engine

  1. Uninstall the Docker Engine, CLI, and Containerd packages:

    $ sudo apt-get purge docker-ce docker-ce-cli containerd.io
    
  2. Images, containers, volumes, or customized configuration files on your host are not automatically removed. To delete all images, containers, and volumes:

    $ sudo rm -rf /var/lib/docker
    $ sudo rm -rf /var/lib/containerd
    

You must delete any edited configuration files manually.

Reference