Hands-on

Wire the commands together: write a reusable Dockerfile from scratch, then slim the image with multi-stage builds.

📄️Writing a Dockerfile

A Dockerfile is the "recipe" for building an image — each instruction creates a layer. A clear, cache-friendly Dockerfile greatly improves build speed and maintainability.

📄️Image Slimming

Smaller images pull faster, shrink the attack surface, and deploy lighter. Three techniques, from easy to advanced.