#YAML

2 guides

Annotated docker-compose.yml file with callouts pointing at the services, ports, volumes, and environment keys

docker-compose.yml Explained Line by Line

A line-by-line walkthrough of a real docker-compose.yml file: services, image, ports, volumes, environment, depends_on, networks, and the top-level keys.

Sysadmin Desk Sep 5, 2026 8 min read

Diagram-style cover showing one compose.yaml file defining a web container and a database container connected on a shared Docker network

Pillar Guide

Docker & Containers

Docker Compose Beginner Guide: Run Multiple Containers with One File

Learn Docker Compose from scratch: write one YAML file to run multiple containers, with a working WordPress + MySQL example and the core up/down commands.

Sysadmin Desk May 26, 2026 10 min read