Dockerコマンドをsudoなしで実行する方法 - QiitaなぜDockerコマンドにはsudoが必要なのか？ The docker daemon binds to a Unix socket instead of a TCP port. By default that Unix socket is owned by the user root and other users can access it with sudo. For this reason, docker daemon always runs as the root user. To avoid having to use sudo when you use the docker command, create a Unix group called docker and add users to it. When the docker daemon starts, it make
systemd時代のDockerをProxy環境下で使う - Qiita
