Easy local deployment of PHP applications with Capistrano 2

Capfile

require 'railsless-deploy'
load 'path/to/script/deploy'

deploy.rb

set :application, "application-name"
set :keep_releases, 3

set :user,        "root"
set :use_sudo,    true

set :repository, "file:////path/to/project"
set :deploy_to,   "/var/www/#{application}"
set :deploy_via, "copy"
set :scm, :git
set :copy_cache, true

role :web, "127.0.0.1" # IP address of server

after "deploy:finalize_update", "assets:build", "vendors:install"

before "npm:install", "npm:copy_previous"
before "assets:build", "npm:install"
before "vendors:install", "composer:install", "vendors:copy_previous"

# Clean old releases after successful deploy
after "deploy", "deploy:cleanup"

namespace :npm do
    task :copy_previous, :except => { :no_release => true } do
        run "if [ -d #{previous_release}/node_modules ]; then cp -a #{previous_release}/node_modules #{latest_release}/node_modules; fi"
    end

    task :install, :except => { :no_release => true } do
        run "cd #{latest_release} && npm install --loglevel warn"
    end
end

namespace :assets do
    task :build, :except => { :no_release => true } do
        run "cd #{latest_release} && bower --no-color install --production --config.interactive=false --allow-root"
        run "cd #{latest_release} && grunt build"
    end
end

namespace :vendors do
    task :install do
        run "sh -c 'cd #{latest_release} && php composer.phar install --no-dev --verbose --prefer-dist --optimize-autoloader --no-progress'"
    end

    task :copy_previous, :except => { :no_release => true } do
        run "if [ -d #{previous_release}/vendor ]; then cp -a #{previous_release}/vendor #{latest_release}/vendor; fi"
    end
end

namespace :composer do
    task :install do
        if 'true' != capture("if [ -e #{latest_release}/composer.phar ]; then echo 'true'; fi").strip
            run "sh -c 'cd #{latest_release} && curl -s http://getcomposer.org/installer | php'"
        end
    end
end