Bits of .NET

🚀 One Command, All Containers

App + database + cache = multiple containers. Docker Compose runs them all with one command. Define, run, stop.

📝 docker-compose.yml

version: '3.8'
services:
    web:
        build: .
        ports:
            - "8000:8000"
        environment:
            - DB_HOST=database
            - DB_USER=postgres
            - DB_PASSWORD=postgres
            - DB_NAME=app
        depends_on:
            - database
            - redis
        networks:
            - app-network

    database:
        image: postgres:15
        environment:
            - POSTGRES_PASSWORD=postgres
            - POSTGRES_USER=postgres
            - POSTGRES_DB=app
        volumes:
            - postgres_data:/var/lib/postgresql/data
        ports:
            - "5432:5432"
        networks:
            - app-network

    redis:
        image: redis:7
        ports:
            - "6379:6379"
        networks:
            - app-network

    nginx:
        image: nginx:alpine
        ports:
            - "80:80"
        volumes:
            - ./nginx.conf:/etc/nginx/conf.d/default.conf
        depends_on:
            - web
        networks:
            - app-network

volumes:
    postgres_data:

networks:
    app-network:
        driver: bridge

🎯 Docker Compose Commands

# Start all services
docker-compose up

# Start in detached mode
docker-compose up -d

# Build and start
docker-compose up --build

# Stop all services
docker-compose down

# Stop and remove volumes
docker-compose down -v

# View logs
docker-compose logs
docker-compose logs -f web

# Execute command in service
docker-compose exec web bash
docker-compose exec web python manage.py migrate

# Scale services
docker-compose up -d --scale web=3

# Check service status
docker-compose ps

# Restart service
docker-compose restart web

💡 Use Cases

• Local development environments
• CI/CD testing
• Microservices applications
• Multi-tier architectures
• Integration testing