Docker, Beyond “It Works on My Machine”

Source: Dev.to

Why Docker Became Popular

Docker didn’t become popular because it’s fancy.
It became popular because developers were tired of wasting time fixing environment issues instead of building features.

Core Idea

Docker is not just about containers.
It’s about consistency and discipline:

• Same app.
• Same dependencies.
• Same behavior — on my laptop, your laptop, CI, and production.

That alone removes a huge category of problems.

Lessons Docker Taught Me

• Start simple, don’t over‑engineer
• One container should do one job
• Docker won’t fix bad design — it exposes it faster
• Teams move faster when everyone runs the same setup
• Docker doesn’t make you a better engineer by default, but it amplifies good engineering practices.

docker #devops #backend #cloud #softwareengineering