podman/docs/source/markdown/options/shm-size.md

####> This option file is used in: ####> podman build, create, pod clone, pod create, run ####> If file is edited, make sure the changes ####> are applicable to all of those.

--shm-size=number[unit]

Size of /dev/shm. A unit can be b (bytes), k (kibibytes), m (mebibytes), or g (gibibytes). If the unit is omitted, the system uses bytes. If the size is omitted, the default is 64m. When size is 0, there is no limit on the amount of memory used for IPC by the <<container|pod>>. This option conflicts with --ipc=host.