mkinitcpio

Generates initial ramdisk environments for booting the Linux kernel based on the specified preset(s). More information: <https://man.archlinux.org/man/mkinitcpio.8>.

Arch Arch Linux
RUN pacman -S --noconfirm mkinitcpio
click the source code to copy install mkinitcpio on any operating system with command-not-found.com