why does the overflow container run dry ?

Check it for cracks then check the coolant in the radiator ... You probably have a leaky cap or hose if that's low .,,, but check your exhaust for white smoke (sometimes you can smell coolant) then have it checked for a blown gasket ... if you have a blown head gasket and don't soon have it repaired .. that coolant residue will coat your catalytic converter ....ODDS ARE IT'S JUST A LEAK SOMEWHERE

I do not smell antifreeze and there is no spots on drive as a leak? Today it is making a noise not a loud noise but a intermittent noise.

Einstein Himself said "Matter can't be made ,, or destroyed" You are losing coolant .// if you are not leaking it,,, then you are burning it ,,, it's that simple. You have eliminated leaking ... so the only other thing it could be is that your burning it. I'm aware that's bad news however it will only get worse if you ignore it.