Multi-Container Apps with Docker Compose
Use Docker Compose to define and run multi-service applications (app, database, cache) together with a single declarative file.
Why Docker Compose?
Real apps rarely run in one container. You often need a web app, a database, and a cache. Docker Compose lets you define all of them in one YAML file and start them with a single command.
The compose.yaml File
Compose reads a file named compose.yaml (or docker-compose.yml). Each entry under services describes one container.
services:
web:
build: .
ports:
- "3000:3000"
db:
image: postgres:16All lessons in this course
- Dockerizing Your Application
- Introduction to Cloud Providers
- Deploying to a Cloud VM
- Multi-Container Apps with Docker Compose