.gitlab-ci.yml in dri-0.1.3 vs .gitlab-ci.yml in dri-0.2.0

@@ -1,11 +1,12 @@
 .job_base:
-  image: ruby:3.1
+  image: ruby:2.7
   variables:
     BUNDLE_PATH: vendor/bundle
     BUNDLE_SUPPRESS_INSTALL_USING_MESSAGES: "true"
   before_script:
+    - gem install bundler -v 2.3.9 --no-document
     - bundle install
   cache:
     key:
       files:
         - dri.gemspec
@@ -31,10 +32,16 @@
   stage: build
   extends: .job_base
   script:
     - gem build
 
+rubocop:
+  stage: test
+  extends: .job_base
+  script:
+    - bundle exec rubocop --color
+
 rspec:
   stage: test
   extends: .job_base
   script:
-    - bundle exec rspec
+    - bundle exec rspec --color