How to Containerize a Node.js Application Using Docker – A Beginner's Guide

Docker is an open-source tool that simplifies software deployment by packaging applications and their dependencies into containers. It ensures consistent performance across different environments, from local machines to cloud servers. Docker uses images as templates and creates lightweight, portable containers that include everything needed to run an application. Benefits include improved DevOps culture, flexible deployment of microservices, and reduced dependency configuration errors. The tutorial covers Docker installation, key concepts, and demonstrates how to containerize a Node.js application using a Dockerfile.