i think they use bwrap as mentioned in a comment below. my use case is to restrict network access for example. Or running multiple firefox instances in parallel

i think they use bwrap as mentioned in a comment below. my use case is to restrict network access for example. Or running multiple firefox instances in parallel (so they dont have the same parent process / cookies etc.). or restrict memory for to 2G per container. there were just a few things i wanted to do that didn't quiet work with flatpak or snap.