Actually run rubocop on the template.rb files

Author: robotdana

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ permissions:
   contents: read # to fetch code (actions/checkout)
 
 jobs:
-  test:
+  prettier:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
@@ -30,6 +30,18 @@ jobs:
           cache: "yarn"
       - run: yarn install
       - run: yarn run format-check
+  rubocop:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          persist-credentials: false
+      - name: Install Ruby and Bundler
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+          ruby-version: '3.0'
+      - run: bundle exec rubocop
 
   test_generated_apps:
     runs-on: ubuntu-latest