Docker takes your application and everything it needs (libraries, code, settings) and wraps it in a lightweight, isolated unit. No more "it works on my machine" excuses—if it runs in the container, it runs anywhere.
Think of Puppet as the rulebook. It ensures your underlying servers are configured exactly how they should be—managing files, packages, and services so your environment stays consistent and "drifts" nowhere. Puppet, Docker, and Kubernetes
Here’s how the three titans of the DevOps toolchain—Puppet, Docker, and Kubernetes—actually fit together: Docker takes your application and everything it needs
A few containers are easy; thousands are a nightmare. Kubernetes automates the deployment, scaling, and management of those containers. It’s the brain that decides which server has room for your app and automatically restarts it if it crashes. Puppet, Docker, and Kubernetes