Deploy from a gist.

gistfile1.rbx

# Use this Capfile to deploy a gist via Capistrano.
#
# If the gist you want to deploy is here: http://gist.github.com/3401,
# just fill in the appropriate server settings (domain, deploy_to, etc)
# and run the following command:
#
#   cap deploy GIST=3401
#
# You might need to run cap deploy:setup first.

load 'deploy' if respond_to?(:namespace)

set :application, "some-app"
set :deploy_to, "/home/rails/#{application}"
set :deploy_via, :remote_cache
set :user, "deploy"
set :scm, "git"

set :branch, "master"
set :domain, 'somewhere.your-domain.com'
role :web, domain
role :app, domain
role :db,  domain, :primary => true

before 'deploy', 'get_gist'
task :get_gist do
  set :repository, "git://gist.github.com/#{ENV['GIST']}.git"
end