Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3643967.

Just a remix that uses a M5x50mm bolt two M5 washers and a nut. Also a toe nub to flip it up. It locks in place by sliding down. This one uses VHB tape to stick to the door but I can make a screw on version. I will also put stick on rubber pad for a tile or wood floor. I am including a Fusion 360 file if anyone wants to make changes.