In order to run tests, follow these steps:

1. Run cd tests if the work directory is not the current one.
2. Run make clean to clean artifacts and init docker-compose networks. Without it (or running any other single tests job) there might be issues with simulateneous running of tests because of a race condition when docker-compose creates multiple default networks and then cannot chose one among them.
3. Run make -j$(nproc) to run all tests and checks. Otherwise, it also possible to specify a job name from Makefile to run only it.