Ducting a Portable AC unit

So I have a 2x4x5 tent in my garage thats insulated except for the big door which gets opened often. I can’t figure out how to duct my housing A/C to the tent well enough for it to cool it down any. I’ve been considering getting a portable A/C unit to put outside the tent because its so small to have one of those inside but I still want to duct the AC into the tent. Any suggestions on how to potentially solve this would be appreciated.

I have a portable a/c and I use a dyer hose that I run into the bottom of my tent. I use the fan unit inside the tent to draw the cold air in