docker: mange docker as a non-root user

本文介绍如何在Docker中设置非root用户权限,包括创建docker组、将用户添加到docker组的方法,以及Linux下关于组管理的额外说明。

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When first installing docker, you will find it requires root priority for even docker run operation. So you should create a group for non-root users to run their code.
https://docs.docker.com/install/linux/linux-postinstall/

Step 1 Create the docker group (all too often it has already been created since the first installation of docker)

sudo groupadd docker

Step 2 Add your user to the docker group. Suppose my user name is murphy

sudo usermod -aG docker murphy

More notes about group management in Linux:

  1. List all groups
cat /etc/group
  1. List all the members under a certain group
getent group groupname
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