Recently I was setting a new Rails project up on CircleCI to run Rubocop. When CircleCI was running it was running Rubocop against about 6000 files (while I know Rails projects can be big - they ain’t that big!). It took a bit of digging around online to find the solution so I thought I would share it with you.
So when CircleCI was running Rubocop, I found it was running it on all the dependencies and the gubbins of Rails. On investigating this I found that CircleCI installs everything in the vendor directory. So to stop it from happening I just had to exclude my vendor directory in my .rubocop.yml config file, like this:
AllCops:
Exclude:
- vendor/**/*