How to install yay in distrobox?

[RashiqAzhan]

How to install yay from the file? I would like to have the entire distrobox app defined in a file for reproducibility.

distrobox.ini

[foo-distrobox-archlinux]
image=quay.io/toolbx/arch-toolbox:latest
pull=true
replace=true
start_now=true
additional_packages="git base-devel"
init_hooks=pacman -S --needed git base-devel && git clone https://aur.archlinux.org/yay-bin.git && cd yay-bin && makepkg -si;
init_hooks=ln -s /usr/bin/distrobox-host-exec /usr/local/bin/docker