Updated Docker.mk to be compatible with Mac OS X
Updated Docker.mk to be compatible with Mac OS X

ECOM-3895

hks-epod/configuration,openfun/configuration,open-craft/configuration,stvstnfrd/configuration,EDUlib/configuration,mitodl/configuration,jorgeomarmh/configuration,stvstnfrd/configuration,pobrejuanito/configuration,proversity-org/configuration,marcore/configuration,EDUlib/configuration,gsehub/configuration,Stanford-Online/configuration,mitodl/configuration,stvstnfrd/configuration,hks-epod/configuration,edx/configuration,arbrandes/edx-configuration,Stanford-Online/configuration,michaelsteiner19/open-edx-configuration,arbrandes/edx-configuration,rue89-tech/configuration,appsembler/configuration,EDUlib/configuration,Stanford-Online/configuration,rue89-tech/configuration,openfun/configuration,edx/configuration,stvstnfrd/configuration,hastexo/edx-configuration,hks-epod/configuration,michaelsteiner19/open-edx-configuration,nunpa/configuration,armaan/edx-configuration,rue89-tech/configuration,appsembler/configuration,rue89-tech/configuration,mitodl/configuration,armaan/edx-configuration,hastexo/edx-configuration,marcore/configuration,nunpa/configuration,marcore/configuration,EDUlib/configuration,hastexo/edx-configuration,open-craft/configuration,appsembler/configuration,jorgeomarmh/configuration,proversity-org/configuration,mitodl/configuration,hks-epod/configuration,proversity-org/configuration,marcore/configuration,Livit/Livit.Learn.EdX.configuration,arbrandes/edx-configuration,pobrejuanito/configuration,pobrejuanito/configuration,michaelsteiner19/open-edx-configuration,edx/configuration,openfun/configuration,armaan/edx-configuration,Livit/Livit.Learn.EdX.configuration,openfun/configuration,Livit/Livit.Learn.EdX.configuration,gsehub/configuration,nunpa/configuration,edx/configuration,Stanford-Online/configuration,armaan/edx-configuration,hks-epod/configuration,open-craft/configuration,appsembler/configuration,arbrandes/edx-configuration,michaelsteiner19/open-edx-configuration,nunpa/configuration,jorgeomarmh/configuration,EDUlib/configuration,hastexo/edx-configuration,open-craft/configuration,stvstnfrd/configuration,jorgeomarmh/configuration,arbrandes/edx-configuration,gsehub/configuration,pobrejuanito/configuration,gsehub/configuration,rue89-tech/configuration,Stanford-Online/configuration,gsehub/configuration,Livit/Livit.Learn.EdX.configuration,hastexo/edx-configuration,proversity-org/configuration,proversity-org/configuration