#Linux

2 guides

Fix the Docker 'port is already allocated' error: find what's using the port with docker ps, ss, and lsof, then free it or change the mapping.

Sysadmin Desk Jun 13, 2026 8 min read

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