Adds all 8 ROOT 04 modules (why containers exist, images & containers, Docker CLI, container
networking, container storage, Dockerfile & image build, Docker Compose, containers →
Kubernetes) — 43 activities, using the nested Docker Engine Phase 6D built and tested. Modules
1, 2, and 8 are conceptual (no lab by design) — the honest bridge module (M8) explicitly names
what Kubernetes adds beyond what this course already taught, without re-teaching Kubernetes
itself.
Adds 5 new hands-on Docker scenarios plus 2 MCQs, all against the real nested Docker Engine:
docker-cli-basics (run/exec/inspect a real container), docker-container-networking (a genuine
"works internally, unreachable from host" port-publishing failure, diagnosed and fixed by
recreating the container with the correct `-p` flag), docker-container-storage (a real
destroy/recreate cycle proving named-volume persistence, not just described), docker-build-image
(a real Dockerfile, a real build, a real custom image run), and docker-compose-multiservice (a
real two-service Compose application with a real published port). All tested end-to-end via the
real scenario-validation API, including negative tests.
Wires rootnode-containers-assessment (2 required + 4 random-draw scenarios) using the existing
Phase 3B assessment engine.
This completes the entire ROOT_ Foundations sequence (ROOT 01-04) — see
docs/PHASE6E_ROOT_FOUNDATIONS_COMPLETION.md.
Co-Authored-By: Claude Sonnet 5 <[email protected]>
