Docker for developers
"Works on my machine" is the most expensive sentence in software. Docker exists to kill it. At its core, Docker packages your application together with everything it needs to run — the runtime, libraries, and system dependencies — into a single portable unit that behaves identically on your laptop, a teammate's machine, and production. Once the concepts click, it stops feeling like mysterious DevOps magic and becomes a tool you reach for daily. Two words do most of the work: An image is a bluepr
