devops / containers
Containers & Kubernetes, Free
Containers changed how software is packaged and run; Kubernetes changed how it's operated at scale. Learn Docker and Kubernetes from the official docs, then get your hands dirty in free browser labs. All resources free and current.
A container bundles an app with everything it needs to run, so "works on my machine" finally means "works everywhere." Docker made that mainstream; Kubernetes orchestrates thousands of containers across a cluster. These are the two most in-demand DevOps skills — learn the fundamentals from the official docs, then practice in the free hands-on environments below (no local install required).
01 · FUNDAMENTALS
Docker & Kubernetes
The authoritative, always-current references.
- Docker Documentation (official) ↗Everything from your first container to multi-stage builds and Compose — the source of truth for containerization.docs.docker.com
- Kubernetes Documentation (official) ↗Concepts, tutorials, and reference for the industry-standard container orchestrator. Dense but authoritative.kubernetes.io
02 · HANDS-ON
Practice for free
Learn by doing — in a real environment, in your browser.