Add Container Agent Skill

Add or edit a Container

Read docs/agents/dcm.md for how DCM merges Containers with Apps, and docs/agents/generated-data.md for the collision gap this skill closes by hand. Use CONTEXT.md's words: DCM, Container, App.

1. Check for collisions

DCM merges a Container with the App of the same id or alias, and the App's compose wins; it drops a Container named <app>-... whose services the App provides. No test reports either. Search for the product under every spelling (<name> below):

jq -r '.apps[].id' dcm/src/data/selfhost.json | grep -i <name>
grep -n -i <name> dcm/src/lib/selfhost.ts
grep -rn 'id: "<id>"' dcm/src/tools

Done: the first two print nothing, no App id followed by - is a prefix of <id>, and the third prints nothing. When the first two hit, the Catalog already has the product: change its compose through edit-catalog, and here only edit the existing Container's name, tags or icon.

2. Cite the image and ports

Fetch the project's own docs or registry page (curl or your fetch tool) and take the image, tag, container port and data path from it. Values in the request are claims to confirm against that page.

Done: your final message and the PR quote the source URL, and the image, port and data path in the entry match what the page says.

3. Add the DockerTool

Pick the category file in dcm/src/tools/ (media, management, database, monitoring, automation, other). The DockerTool type and its compose validation are in dcm/src/lib/docker-tools.ts.

Done: the entry has a lowercase hyphenated id; a composeContent that starts with services:, names an image and uses ${PUID}, ${PGID}, ${TZ}, ${CONFIG_PATH}, ${DATA_PATH}, ${CONTAINER_PREFIX} and ${RESTART_POLICY} where they apply; a githubUrl when the project has one; and no stars field (bun run stars writes them).

4. Run what you touched

bun test dcm/tests/validate-all-containers.test.ts dcm/tests/templates.test.ts dcm/tests/validate-networks.test.ts
bunx turbo run build lint

dcm/tests/validate-compose.test.ts runs docker compose config, so leave it to CI.

Done: both commands exit 0.

5. Review an issue's pull request

For a pull request opened by .github/workflows/dcm-add-container.yml, check it against steps 1 to 3.

Done: the diff touches only a file in dcm/src/tools/, and steps 1 and 4 pass on its branch.