def shared_filesystem(workdir, datadir, tmpdir=None):
    return {"type": "shared", "workdir": workdir, "tmpdir": tmpdir, "datadir": datadir}
Returns the primary domain of the tenant
dataset/ETHPy150Open chapmanb/bcbio-nextgen-vm/bcbiovm/ship/pack.py/shared_filesystem--crossover with--dataset/ETHPy150Open tomturner/django-tenants/django_tenants/models.py/TenantMixin.get_primary_domain