Series · 4 parts

Containerization from the Ground Up

  1. 01What Containers Actually Are — Not the Marketing VersionContainers are not lightweight VMs. They are processes with resource constraints and namespace isolation. Understanding the actual mechanism makes you a better user of Docker, Kubernetes, and every container runtime.
  2. 02Writing Production-Grade Dockerfiles: The Decisions That Actually MatterMulti-stage builds, minimal base images, layer caching, non-root users, build arguments, and the specific Dockerfile patterns that separate a working image from a secure, efficient, maintainable one.
  3. 03Container Networking: How Containers Talk to Each Other and to the Outside WorldBridge networks, overlay networks, DNS-based service discovery, port publishing, and the iptables rules that make container networking work — and fail.
  4. 04Kubernetes Fundamentals: What It Is, What It Does, and When You Actually Need ItPods, Deployments, Services, ConfigMaps, and the control loop that keeps your containers running. The honest introduction to Kubernetes for engineers who want to understand it, not just use it.