Docker

What Is Docker, and Why Should You Care?

Docker packages an app with everything it needs to run, so it behaves the same on your laptop, a teammate's machine, and the server.

Docker

Writing Your First Dockerfile

A Dockerfile is a short recipe describing how to build your image, one instruction at a time.

Docker

Images, Containers and the Docker Commands You Will Use Daily

A short, practical reference for the small set of Docker commands that cover almost everything you do day to day.

Docker

Docker Compose: Running Multiple Containers Together

Almost no real app is a single container — Compose describes an app's backend, database and any other services in one file.

Docker

Real Project: Dockerizing a Node.js Express API

A complete, real Dockerfile for a Node.js Express API, including environment configuration and a health check.

Docker

Real Project: A Multi-Stage Dockerfile for a Spring Boot App

A real, working multi-stage Dockerfile for a Spring Boot app, the same pattern this site itself is built and deployed with.