Fixes https://github.com/nrwl/nx/issues/754 ## Current Behavior `runInBand` and `maxWorkers` are useful for CI environments but are not available through the builder. ## Expected Behavior Both `runInBand` and `maxWorkers` have been added and can be used as per [Jest Troubleshooting](https://jestjs.io/docs/en/troubleshooting#tests-are-extremely-slow-on-docker-and-or-continuous-integration-ci-server). ```sh --max-workers Max number of workers to run tests across. Useful for CI. (https://jestjs.io/docs/en/cli.html#maxworkers-num) --run-in-band Run tests in a single process as opposed to multiple workers. Useful for CI. (https://jestjs.io/docs/en/cli.html#runinband) ```