Docker 101: Building Container Images

Docker 101: Building Container Images🐳

I prepared a skill path that helps you learn Dockerfile authoring from the ground up, starting with the simplest possible image and building up to production-grade multi-stage builds. You'll learn how to:

- Build and publish a container image to a registry

- Write Dockerfiles using core instructions: FROM, COPY, RUN, and CMD

- Handle application and system-level dependencies in a Dockerfile

- Compile and build applications inside a Dockerfile

- Inspect container image internals (layers, sizes, digests)

- Optimize images with multi-stage builds to produce smaller, cleaner production artifacts

By the end of this skill path, you'll be comfortable writing Dockerfiles for real-world applications and understand how to keep your images lean and efficient.

Happy building! 🛠️

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