Docker Fullstack Application Documentation

1. Overview

Docker allows developers to package applications into containers that are lightweight, portable, and isolated. For a fullstack application, different components are usually run in separate containers for modularity, scalability, and easier management.

Components of a Fullstack Application in Docker

• Backend: Node.js, Python, Java, etc.
• Frontend: React, Angular, Vue, or served via Nginx
• Database: PostgreSQL, MSSQL, MySQL
• Cache (Optional): Redis

Each of these components runs in its own container and communicates over an internal network.

2. Docker Concepts

2.1 Docker

• Platform to create, deploy, and run containers.
• Containers run applications in isolated environments, ensuring consistent behavior across machines.

2.2 Image

• A read-only blueprint of an application, including code, dependencies, and runtime.
• Example: redis:latest, node:20
• Built using a Dockerfile.

2.3 Container

• A running instance of an image.