Containers for Beginners: Your App in a Box with Docker
Welcome back to DevOps for Beginners ! We've been building our understanding of the different pieces that make up modern application deployment, from version control with Git to setting up your network in the cloud. Now, let's talk about something called containers and a very popular tool used to create them: Docker . Think of containers as lightweight, portable boxes that hold everything your application needs to run – the code itself, its dependencies (like specific libraries or software), and the settings it relies on. This "app in a box" approach solves a lot of common headaches in software development and deployment. The "It Works on My Machine!" Problem Have you ever heard a developer say, "But it works on my machine!"? This often happens because an application relies on specific software versions or settings that are present on the developer's computer but might be missing or different on another machine, like a testing server or the pr...