Tiny explainers grouped by topic. Spend less time Googling, more time building.
The 80% you actually need: Pods, Deployments, Services, Ingress/Gateway, Requests/Limits, Probes, Config & Secrets, HPA, storage, and the kubectl commands you’ll use daily.
Multi-stage builds, cache-friendly layering, non-root users, and sane defaults for ENTRYPOINT/CMD, healthchecks, and secrets. Copy‑paste patterns for Node, Python, and Go.
As Podman’s daemonless, rootless approach gains traction, here’s a practical comparison with Docker—architecture, security, node networking/volumes, speed, and real migration paths.
A no-jargon primer on containers: how they isolate processes, how images/layers work, and what Docker/Kubernetes actually do.