Docker Compose — Complete Beginner to Intermediate Guide
🐳 Docker Compose — Complete Beginner to Intermediate Guide 1️⃣ What Is Docker Compose? Docker Compose is a tool used to: ✅ Define and run multi-container Docker applications ✅ Manage everything using a single YAML file ✅ Start/Stop full application using one command Instead of running multiple docker run commands manually, we use one configuration file. 2️⃣ Why Do We Need Docker Compose? Without Compose: docker run nginx docker run mysql docker run redis With Compose: docker compose up -d Compose is: Cleaner Easier to maintain Production-like structure Version controlled (YAML file) 3️⃣ File Naming & Structure ✅ Default File Name docker-compose.yml OR compose.yaml Docker automatically detects these. 📁 Typical Project Structure project-folder/ │ ├── docker-compose.yml ├── Dockerfile (optional) ├── .env (optional) └── app/ 4️⃣ Basic Structure of docker-compose.yml version: "3.8" services: web: image: nginx ports: ...