Had you replied in a respectful manner, you would have gotten a reply from me with what I think are legitimate reasons for having this script in a docker image.
The required degree of respect was exhausted by the question of what the advantages were. This rampant epidemic of wanting to dump everything into some kind of "container" and "image" was quite funny for a while, but is now just annoying.
It took more energy to respond in such an abrasive way, than it would've to just ignore the comment if you found it so silly. Go take your social ineptitude elsewhere