What 'containers' mate? The little plastic fabric cover the pax lifejackets come in and you rip open to put the jacket on, or the hidy hole under each seat?
Or are you talking about a bag full of the ~10% more jackets carried than pax that sit up in one of the overheads?
For actual requirements - FAA, have a look around FAR91. For EASA I'll make an assumption and say somewhere in CS-26.