What is Docker?
Docker is an open-source tool that makes it easier for developers to build, ship, and run applications. Imagine you’re developing an app on your laptop. It works fine there, but when you move it to another machine or server, it breaks because of differences in setup. That’s where Docker helps.
Docker lets you package your application along with everything it needs code, libraries, runtime, and tools into a container. Think of a container like a small, lightweight box that holds your app and its environment. This box ensures your app runs exactly the same way, no matter where you run it: your laptop, a server, or the cloud.
The main benefits of Docker are:
- No more “it works on my machine” problems
- Easy to share your app with others
- Faster setup and deployment
- Uses less system resources compared to full virtual machines
With Docker, developers can focus on writing code without worrying about environment differences. It’s widely used in modern software development, especially for microservices, DevOps, and cloud deployments.
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