the script makes various assumptions about the system ranging from

/home/deck is the users home dir, to kde plasma is the used desktop environment or can be launched from gamemode.

so probably not without tweaks ;)

https://distribution.github.io/distribution/

is an opensource implementation of a registry.

you could also self host something like gitlab, which bundles this or sonatype nexus which can serve as a repository for several kinds of artifacts including container images.