jest: Unrecognized option "clearCache" from `jest --clearCache`

We fixed our CI problem today. Inside our docker container, we got a node_modules folder in the root dictionary. Then somehow npm did pick the jest-cli from this parent node_modules folder instead of choosing the locally installed version for the project.

I think it is related by the fact, that the root folder did have a jest-cli package directly specified and the project had it only included by the jest package.