Steps to deploy changes to a RoR application to the production machine

List the differences between local (deployment) and the remote (production) Git repositories

$ git diff master <alias of the production remote repo>/master --stat

The steps to push changes to remote Git, and deploy the changes on the production server:

$ git add .

$ git commit -m "modified ... files"

$ git push < alias of the production remote repo >

If there are no database schema changes to deploy:

$ cap deploy

If there are database schema changes:

$ cap deploy:migrations