The Trojans is a spirited musical about disengaged hourly workers acting out fictionalized memories of their long-gone high school days. A joint presentation of Loading Dock Theatre and Nancy Manocherian’s the cell, the show, directed by Eric Paul Vitale, is inspired—to some extent, at least—by Homer’s Iliad. It’s also the latest entry in an expanding catalog of American plays set in Amazon warehouses (in this instance, a fictional facility in Carlton, a small North Texas town with two high schools).