The Bunker size should be 5 blocks wide, 7 blocks long and 3 blocks high. Make sure to dig the floor and replace with wood frames as you go. Upgrade the floor to wood when done.
Assuming you have completed the task where you’re supposed to place all the Storage Boxes, proceed with replacing all the stone walls with wood frames and upgrade. Leave out 2 blocks on each side for Wooden Doors.
Replace all ceiling stone with Wood Frames and then upgrade.
Lastly, let’s install 2 Wooden Doors. One will be for the Farming Room and the other for the Garage.
Here’s how everything should look like once all the Workstations are put in place.
