Simple Configuration
Define multiple application components in a single configuration file.
Docker Compose Tutorial
Docker Compose for Beginners
Learn how to build and manage multi-container applications using Docker Compose. Understand compose.yaml, services, networks, volumes, environment variables, and the most important Docker Compose commands.
Level: Beginner
Topics: 10 Core Areas
Application Stack
Services → Network → Application
⚙️
1Create compose.yaml
2Define Services
3Configure Networks
4Add Volumes
5Start Application Stack
Introduction
Manage your entire application stack
Docker Compose is designed for applications that use multiple containers. Instead of manually running each container with separate Docker commands, you can define your application configuration in a Compose file.
For example, a typical application might contain a frontend, backend API, database, and caching service. Docker Compose allows these services to be defined and managed together.
The Compose configuration can also define networking, storage, environment variables, and other settings required by your application.
Your First Compose File
A simple multi-container example
This example defines a web application and a database service running together.
compose.yaml
services:
web:
build: .
ports:
- "3000:3000"
environment:
DATABASE_HOST: database
depends_on:
- database
database:
image: postgres:16
environment:
POSTGRES_DB: appdb
POSTGRES_USER: appuser
POSTGRES_PASSWORD: password
volumes:
- postgres-data:/var/lib/postgresql/data
volumes:
postgres-data:Why Docker Compose
Simplify multi-container applications
Docker Compose provides a structured way to configure and manage services that work together as part of an application.
Multi-Container Applications
Run services such as web applications, APIs, databases, and caches together.
Consistent Environments
Use the same Compose configuration across development, testing, and other workflows.
Easy Management
Start, stop, rebuild, inspect, and monitor your application stack with Docker Compose commands.
Core Concepts
Learn Docker Compose step by step
These concepts will help you understand how multi-container applications are structured and managed using Docker Compose.
What is Docker Compose?
Understand how Docker Compose helps define and run applications that use multiple containers.
Understanding compose.yaml
Learn how the Compose YAML file defines the services and configuration required by your application.
Services
Understand how each application component, such as a frontend, backend, database, or cache, can be defined as a service.
Building Services
Learn how to use the build configuration to create a Docker image from a Dockerfile.
Using Images
Learn how services can use existing container images from registries.
Docker Compose Networking
Understand how services communicate with each other through Docker networks.
Volumes and Persistent Data
Learn how named volumes and mounts can be used to store data outside the lifecycle of individual containers.
Environment Variables
Learn how to configure application settings and environment-specific values.
Managing the Application Stack
Use Docker Compose commands to start, stop, rebuild, inspect, and manage your application.
Multi-Container Architecture
Learn how Docker Compose can organize applications that contain multiple connected services.
Essential Commands
Manage your Compose application
These commands are commonly used to start, stop, inspect, and troubleshoot Docker Compose applications.
docker compose upCreate and start the services defined in your Compose configuration.
docker compose up -dStart the services in detached mode so they continue running in the background.
docker compose downStop and remove the containers and resources created for the application stack.
docker compose psDisplay the current status of services in the Compose project.
docker compose logs -fFollow and view log output from the running services.
docker compose exec web shRun an interactive shell or command inside a running service container.
Skills You Will Learn
Docker Compose fundamentals
Build the foundation required to work with multi-container Docker applications.
Docker Compose
compose.yaml
Services
Networks
Volumes
Environment Variables
Multi-Container Apps
docker compose up
docker compose down
docker compose logs
docker compose ps
docker compose exec
Learning Roadmap
Build your first Compose application
Follow this process to define and run your first multi-container application.
Prepare Your Application
Start with one or more applications or services that you want to run together.
Create compose.yaml
Create a Compose configuration file in your project directory.
Define Your Services
Configure the application components that make up your stack.
Configure Ports and Variables
Add ports, environment variables, and other service configuration.
Add Networks and Volumes
Configure communication between services and persistent storage where required.
Start the Application
Use docker compose up to create and start the services defined in your configuration.
What's Next?
Continue your Docker journey
After learning Docker Compose, continue exploring Docker images, containers, networking, storage, and DevOps workflows.
Start Building
Ready to build your first multi-container application?
Create your compose.yaml file, define your services, and start your complete application stack with Docker Compose.