Multi-Container Apps with Compose

In real-world applications, you rarely have just one component. Imagine a web application: you need a web server (like Nginx), a backend application (like Python Flask), and a database (like Redis or PostgreSQL).

Each of these components has its own dependencies and configuration. Managing them individually and ensuring they communicate correctly can quickly become complex.

Docker Compose is a tool designed to simplify the process of defining and running multi-container Docker applications.

• You define your entire application's services (containers) in a single YAML file.
• Then, with one simple command, Compose creates and starts all the services for you.
• It's incredibly useful for local development and testing environments.