Docker basics: from 'it works on my machine' to actually understanding what you're doing

Thu, 16 Apr 2026 00:00:00 +0000

Docker is one of those tools that everyone “uses” and almost nobody bothers to understand. Which is a shame, because once you get it, it’s a game-changer as a developer: you go from “it works on my machine” to “it works on my machine, on yours, in CI, and in production — and I can prove it.”

The goal of this tutorial is simple: if you’ve never touched Docker, by the end you should be able to navigate the core concepts comfortably, run containers, work with volumes, and understand what you’re doing. Not blindly copy-pasting commands like a trained monkey, but knowing why they work.

Practice on I am Lino

Docker basics: from 'it works on my machine' to actually understanding what you're doing