Docker Compose Tutorial 🐳

Docker Compose is a powerful tool for defining and running multi-container Docker applications. It uses a YAML file to configure your application’s services, networks, and volumes. Below is a quick guide to get started:

🧩 Basic Concepts

Services: Define containers and their configurations (e.g., image, ports, environment variables)
Networks: Configure custom networks for service communication
Volumes: Manage persistent storage for data persistence
YAML File: The core configuration file (e.g., docker-compose.yml)

📝 Example Structure

version: '3'
services:
  web:
    image: nginx:latest
    ports:
      - "80:80"
    volumes:
      - ./html:/usr/share/nginx/html
  db:
    image: mysql:5.7
    environment:
      MYSQL_ROOT_PASSWORD: example

🧱 Step-by-Step Guide

Create a YAML file: Start with docker-compose.yml
Define services: Specify containers and their dependencies
Run the command: Use docker-compose up to start services
Check logs: Use docker-compose logs for debugging

📚 Best Practices

Use docker-compose down to stop and remove containers
Store sensitive data in environment files (.env)
Leverage networks for internal service communication

🌐 Expand Your Knowledge

Learn more about Docker Container Networking
Explore advanced service configurations