Update production manifest

manifest.yml

@@ -20,6 +20,11 @@ applications:
 
   - name: dluhc-core-production
     <<: *defaults
+    processes:
+      - type: web
+        command: bundle exec rake cf:on_first_instance db:migrate && bin/rails server
+        instances: 4
+        memory: 1G
     env:
       RAILS_ENV: production
     host: submit-social-housing-lettings-sales-data