Conciseness

Every line is operational — commands, build-time expectations, ports, and image details — with zero concept explanation or padding. It matches the level-5 anchor 'Lean and efficient; assumes Claude's competence; every token earns its place' (e.g., 'Required after container/Dockerfile changes. Tests won't see changes until image is rebuilt.' states only non-obvious project-specific facts).

Actionability

Both workflows give copy-paste-ready commands ('docker buildx build -t netalertx-test .', 'docker compose up -d --build --force-recreate', a concrete pkill pattern) covering the common test and production cases, matching the level-5 anchor. The only non-command step ('Close VS Code forwarded ports') is genuinely a manual user action, not a gap in guidance.

Workflow Clarity

The sequence is present (stop services → close ports → build/launch) but there are no validation checkpoints after the destructive/batch operations — the 'pkill -f ...' service kill and 'docker compose up --force-recreate' are destructive yet the skill never verifies the container is healthy or the ports respond. Per the rubric guideline, destructive workflows without validation cap at 3; it is not level 2 because the steps themselves are well-defined and mostly non-overlapping.

Progressive Disclosure

This is a simple, single-purpose skill under 50 lines with no bundle files (no references/, scripts/, or assets/ exist), and the body is organized into clear, well-labeled sections. Per the rubric guideline, such skills score 5 with just well-organized sections; there are no buried references or inlined content that belongs in separate files.

Specificity

The description names the domain ('Build Docker images') and a couple of concrete actions ('build test image', 'launch production container'), but coverage is not comprehensive — it stops at build/launch without naming tag/push or verification. It matches the anchor 'Names domain and 1-2 concrete actions, but not comprehensive' better than the level-4 'several specific actions; minor gaps', which implies a broader action list.

Completeness

It explicitly answers both questions: 'what' is 'Build Docker images for testing or production' and 'when' is an explicit 'Use this when asked to...' clause with concrete trigger phrases. This mirrors the level-5 anchor's what+when-with-triggers structure; it is not level 4 because the 'when' clause is already explicit and enumerates concrete triggers rather than being only generally stated.

Trigger Term Quality

Triggers 'build container, build image, docker build, build test image, or launch production container' are natural phrases a user would actually say, with good variation coverage. Not level 5 because common variants like 'rebuild image', 'docker compose up', or 'production build' are missing; clearly above level 3's 'missing common variations'.

Distinctiveness Conflict Risk

The scope is narrow (building/launching this project's Docker images) with distinct, concrete triggers, so it is mostly distinct. Not level 5 because generic phrases like 'docker build' and 'build image' could overlap with other Docker-related skills in a general environment; not level 3 since the full trigger set is tied to a specific build/launch workflow.