Most of us hammock hangers use a shelter that can work over the hammock or on the ground.
I'm not sure I understand the need for a door?
If you want a bathtub floor, many companies make a bug-net inner with bathtub floor to go inside tarp shelters.
I use a a Warbonnet Blackbird that has an incorporated bug net.
I use an 8.5X11 rectangular tarp.
When I have to go to ground, I pitch my hammock like a bug bivy sitting on top of a tyvek groundcloth.
The tarp pitched close or tight to the ground.
My trekking poles are used to suspend the tarp and hammock ridgelne and bugnet( or Warbonnet Traveler Sock if needed).
The Warbonnet Traveler sock is used when the conditions demand the extra warmth and splash/spray/wind protection.
The combination works very well to create a warm, dry, bugfree, four season shelter, either on the ground or hanging.