Added option to specify app_root, if executing a Procfile from a shared location

lib/foreman/cli.rb

@@ -7,6 +7,7 @@ require "yaml"
 class Foreman::CLI < Thor
 
   class_option :procfile, :type => :string, :aliases => "-f", :desc => "Default: Procfile"
+  class_option :app_root, :type => :string, :aliases => "-d", :desc => "Default: Procfile directory"
 
   desc "start [PROCESS]", "Start the application, or a specific process"
 

lib/foreman/engine.rb

@@ -21,7 +21,7 @@ class Foreman::Engine
 
   def initialize(procfile, options={})
     @procfile  = Foreman::Procfile.new(procfile)
-    @directory = File.expand_path(File.dirname(procfile))
+    @directory = options[:app_root] || File.expand_path(File.dirname(procfile))
     @options = options
     @environment = read_environment_files(options[:env])
   end