Run rubocop via Rakefile

.github/workflows/rubocop.yml

@@ -25,8 +25,6 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
-    # If running on a self-hosted runner, check it meets the requirements
-    # listed at https://github.com/ruby/setup-ruby#using-self-hosted-runners
     - name: Set up Ruby
       uses: ruby/setup-ruby@f20f1eae726df008313d2e0d78c5e602562a1bcf
       with:
@@ -38,7 +36,7 @@ jobs:
     - name: Rubocop run
       run: |
         bash -c "
-          bundle exec rubocop --require code_scanning --format CodeScanning::SarifFormatter -o rubocop.sarif
+          bundle exec rake lint_github
           [[ $? -ne 2 ]]
         "
 

Rakefile

@@ -14,3 +14,10 @@ require 'rubocop/rake_task'
 
 desc 'Run RuboCop'
 RuboCop::RakeTask.new(:lint)
+
+desc 'Run RuboCop for GitHub'
+RuboCop::RakeTask.new(:lint_github) do |t|
+  t.requires << 'code_scanning'
+  t.formatters << 'CodeScanning::SarifFormatter'
+  t.options << '-o' << 'rubocop.sarif'
+end