Is all of rails actually required?

[RhysC]

Overview/summary

While I was looking to trim my Docker image down by reducing dependencies around unused parts of Rails I notice that shopify_app depends on all of rails, not just key parts.
Is this an accurate requirement or more of a connivence?
For example: I assume you don't need actionmailer, actionmailbox, actioncable as i cant see any of them used in the code base
NB the rails gem itself is just a collection of dependencies so we can clearly see what we need from there 🤷

I can see this issue too, but Im not sure if the rational is actually valid 🤷