Add CI Rubocop

Author: Nguyen Van A

.github/workflows/lint.yml

@@ -0,0 +1,34 @@
+name: RuboCop Lint
+
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  rubocop:
+    name: RuboCop Check
+    runs-on: ubuntu-latest
+
+    steps:
+      # Lấy code từ repo
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      # Cài Ruby 3.2.2
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.2.2
+          bundler-cache: true # Tự động cache gem
+
+      # Cài đặt gem theo Gemfile (bundle install)
+      - name: Install dependencies
+        run: bundle install --jobs 4 --retry 3
+
+      # Chạy RuboCop với config chỉ định
+      - name: Run RuboCop
+        run: bundle exec rubocop --parallel --config .rubocop.yml