cosmology - Can we use pressure analogy to understand inflation?

Classically, the expansion of a gas in a container requires the gas to apply outward pressure to the walls of the container. Is it also true for the Universe during inflation? How did the inflation drive the expansion of Universe? I think this analogy is poor because it's not the expansion of a gas in a container. Nothing applies an outward pressure of the "walls" of the Universe rather it is the space that expands.