Minimal Capistrano 2.x Multistage deploy configuration

Capfile

load 'deploy'
load 'config/deploy'

deploy.rb

set :stages, %w(production staging local)
set :default_stage, 'local'
require 'capistrano/ext/multistage'

set :application, "Multistage Sbx"

set :repository,  "git://..."
set :scm, :git
set :deploy_via, :remote_cache

local.rb

set :deploy_to, '/path/to/local'
server 'localhost', :app, :web, :db, primary: true
set :branch, 'master'

production.rb

set :deploy_to, '/path/to/production'
server 'example.com', :app, :web, :db, primary: true
set :branch, 'production'

staging.rb

set :deploy_to, '/path/to/staging'
server 'staging.example.com', :app, :web, :db, primary: true
set :branch, 'production'

Except that in capistrano 3.x :repository has changed to set :repo_url