Munitor/docs/PLAN-node-webapp-dockerfile.md

PLAN: Preserve node-webapp Dockerfiles

Goal

Allow node-webapp consumers to preserve a repository-owned Dockerfile without breaking existing generated-image consumers.

Steps

1. Add an opt-in docker.use_repo_dockerfile manifest field.
2. Fail clearly when an opted-in repository has no root Dockerfile.
3. Add regression coverage and update the public reference.
4. Pack, validate, test, and publish the development orb.
5. Verify the Investing in Chester production image pipeline with the new orb.