You've got the project running locally—everything’s clean, everything’s working. You deploy it—and it blows up. Not the code. The environment. Different versions, missing dependencies, configs that exist on your laptop and nowhere else. It’s frustrating because the problem isn't technical; it’s logistical.
Docker solves exactly that. Aiming to create a functional environment on any machine, the guys who built it back in 2013 were so successful that even the company name had to change...
I’d known about the tool for a long time, but it seemed like unnecessary overhead—one more tool to learn, another layer of abstraction. But the moment I saw a project with multiple services running in parallel, without conflicts, without the "it works here but not there" drama—I saw the real value .
In my opinion, every dev should know how to deploy in containers, lol for real, because: the workflow gets cleaner, onboarding new devs is faster, and deploys become way more predictable.