* **Service Definition**: Specifies how each container should be built, which image to use, and which environment variables to inject. * **Dependency Management**: Uses the `depends_on` keyword to define startup order (e.g., ensuring a database container starts before the API backend). * **Isolated Networking**: Automatically creates a shared network for the application, allowing containers to resolve and communicate with each other using their service names (e.g., `http://db:5432`). * *

# Key Roles:

💬Answer

Service Definition: Specifies how each container should be built, which image to use, and which environment variables to inject.
Dependency Management: Uses the depends_on keyword to define startup order (e.g., ensuring a database container starts before the API backend).
Isolated Networking: Automatically creates a shared network for the application, allowing containers to resolve and communicate with each other using their service names (e.g., http://db:5432).
Local Development: Enables launching a complex environment (e.g., frontend, API, database, cache) with a single CLI command (docker compose up).

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