Use the Docker environment skill

The canonical source is skills/yii2-docker-environment/SKILL.md. It guides image selection, application setup, isolated validation and cleanup. Its helper tests a dependency-free PHP fixture; validating an actual Yii application remains a separate step.

Install and activate

From the application root, use a local checkout until public listing confirms the skill exists on the default branch:

npx skills@1.7.2 add /absolute/path/to/docker-images --list
npx skills@1.7.2 add /absolute/path/to/docker-images \
  --skill yii2-docker-environment --agent claude-code codex opencode

For published sources, first run npx skills@1.7.2 add yii2-extensions/docker-images --list, then use that source instead of the local path. Installation remains project-scoped. Keep the complete skill directory, including its scripts/; installing the skill does not install Docker or pull an image.

The pinned installer uses .agents/skills/ for Codex and OpenCode and .claude/skills/ for Claude Code. This source checkout provides aliases in those two locations to the single canonical skills/ source. Verify discovery in a fresh client session, then explicitly invoke $yii2-docker-environment in Codex, /yii2-docker-environment in Claude Code, or ask OpenCode to load it using its skill tool.

An installer listing, a manual SKILL.md read, native discovery, native activation and a successful container test are separate evidence. Do not claim native client activation from a helper test. The documentation site distributes unchanged skill bundles with provenance and checksums; it does not own another editable copy.

Verify the environment

Run the isolated helper, then run the application’s own checks with its actual dependencies and test configuration. Record the image ID, relevant assertions and missing prerequisites. A successful helper run proves its stack checks; native skill discovery and activation require separate client evidence and are not established by reading the skill manually.