This task is to define the structure only, not to implement, the next task will implement it.
See the full proposal in the doc https://docs.google.com/document/d/1y7cIX3oiqOH8hEuPhSEuqWx-yElxTq9Ga8qJRvqAJjY/edit
Extract from it (and specify) a minimal version for building only (not yet the webservice/jobs bits, nor how to trigger).
Example snippet from the doc:
config-version: v0.1
components:
toolhunt-ui:
build:
repository: https://github.com/wikimedia/toolhunt-ui