docs: Remove /cache from ESLint example, mention cache in separate section
Created by: mrnugget
Using the /cache
directory when using Docker for Mac slows down the
actions by a lot. When removing the /cache
the execution time for the
ESLint campaign when from 16min+ to 9min in a small repository
(codeintellify).
I suspect the reason for that is Docker for Mac's slow file syncing between the container and the host.
So I decided to remove the mention of cacheDirs
from the example
campaign and move it to its own section where it's still available for
"advanced users" that want to optimize their campaign run time.