Your pantry will do quite well for a small "dry" darkroom, I've worked out of them for years before building the one I have now. I found a good print tub in an old vegetable crisper out of a discarded refrigerator, it was a big rectangle about 8 inches deep and about 10x12 inches area. Any easy to handle contaner will do as long as you can immerse the print completely in it with room for more.
Just be sure to take frequent breaks for fresh air as such a small room will get stuffy pretty quick. Be best to do your work at night with the kitchen lights out so you can leave the door open and have more room to move around.