Capistrano 3: Tag Deploys

deploy.rb

after 'deploy:restart', 'git:push_deploy_tag'
namespace :git do
  task :push_deploy_tag do
    on roles(:app) do
      user  = `git config --get user.name`.chomp
      email = `git config --get user.email`.chomp
      stage = fetch(:stage)
      current_revision = fetch(:current_revision)

      info `git tag #{stage}-deploy-#{release_timestamp} #{current_revision} -m "Deployed by #{user} <#{email}>"`
      info `git push --tags origin`
    end
  end
end