how do you keep light from shinning though doors. its suppose to work like the walls right? this happens after lightmapping

There is just not one of anything that is going to solve this as Lightmapping is a WIP still and will be long after June probably.

That being said, The only shadow you will get from dynamic objects is from the sunlight.

Static objects should render shadows as long as they have a minimal thickness when light mapped. And even then dynamic lights will bleed thru them. The sunlight and any other dynamic lights you are using.
Turn dynamic light ranges down to the area only that you need them. Turn static light ups about 3 time the range of the dynamic. I pair them with slightly different colors.

Also once you bake shadows with a door closed the shadow will not change when the door opens.

The are no real time shadows except for the sun light right now.

Doors are dynamic and don't react to lightmapping. You will need to design your lighting in a way that this is not noticeable.

put a wall there, light map your level, delete the wall
or
make the door static, light map the level, make the door non-static

but as said above, the door will always cast (or not cast) a shadow once your level is light mapped