Requested via Forums https://forum.vyos.io/t/container-custom-option-shm-size/9765
podman man page:
--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. This option conflicts with --ipc=host.