Stop in for a cup of coffee

Any one ever run a couple of outlets and lights in one? I am thinking metal conduit the easiest? Weld the mounting points ? Open to ideas. Tops 15 amps. 2 led lights, two outlets one near the front and one in the back for a de humidifier. Eventually I will punch a door in the side and connect it to the shop, oneday my vision of grandor.
Yes. Army does it all the time. Uses them to house soldiers in combat zones and for training areas on various bases.they just use self tapping roofing screws to mount stuff