ng lint Could not find custom rule directory: codelyzer with Angular CLI on gitlab CI

ng lint fails on Gitlab CI with the error message An unhandled exception occurred: Failed to load /builds/trade-up/trade-up/common/projects/trade-up-common/tslint.json: Could not find custom rule directory: codelyzer.

ng lint is running without issues on my local machine but failing on gitlab CI.

In the trade-up-common package, I have added tslint.json to the .npmignore file. Codelyzer is included in the dependencies of both the main angular app and the common package.

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