#Ubuntu

2 guides

Terminal showing the Docker permission denied error on the socket next to the usermod command that fixes it

How to Fix Docker Permission Denied on Ubuntu

Got 'permission denied' on the Docker socket in Ubuntu? Add your user to the docker group, re-log, and verify. Plus why sudo works and the security trade-off.

Sysadmin Desk Sep 19, 2026 7 min read

Terminal-style cover showing apt installing Docker Engine on Ubuntu Server with the official Docker repository configured

Pillar Guide

Docker & Containers

How to Install Docker on Ubuntu Server Step by Step

Install Docker on Ubuntu Server the right way: add the official apt repo and GPG key, install docker-ce plus the Compose plugin, and verify it works.

Sysadmin Desk Jun 6, 2026 9 min read