2 docs tagged with "debian"

Fix 'E: Unable to locate package docker-compose-plugin' in 5 commands. Copy-paste steps for Ubuntu 20.04/22.04/24.04 and Debian 11/12, plus the 3 error variants (no installation candidate, dpkg overwrite, docker-compose-v2).

Install Docker Compose v5 on Ubuntu 22.04/24.04/26.04, Debian 12/13, any Linux and macOS. Copy-paste commands, how to check the version, and fixes for 'docker compose is not a docker command'.