add auto migrate in the CI

.gitlab-ci.yml

@@ -1,15 +1,17 @@
 before_script:
     - apt-get update -qy
-    - apt-get install -y ruby
+    - apt-get install -y ruby git
     - gem install dpl
+    - curl https://cli-assets.heroku.com/install.sh | sh
 
 stages:
     - deploy
 
-deploy:
+deploy_production:
     stage: deploy
     image: ruby:latest
     script:
         - dpl --provider=heroku --app=$HEROKU_APP_PRODUCTION --api-key=$HEROKU_API_KEY
+        - heroku run bundle exec rails db:migrate --exit-code --app $HEROKU_APP_PRODUCTION
     only:
         - master