Read RACK_ENV but apply RAILS_ENV

Ruby whenever uses RAILS_ENV in crontab.

config/schedule.rb

@@ -1,5 +1,5 @@
-if ENV['RAILS_ENV']
-  set :environment, ENV['RAILS_ENV']
+if ENV['RACK_ENV']
+  set :environment, ENV['RACK_ENV']
 end
 
 set :output, 'vedia.log'

vedia.rb

@@ -10,6 +10,10 @@ require 'redcarpet'
 
 include GetText
 
+if ENV['RAILS_ENV']
+  set :environment, ENV['RAILS_ENV']
+end
+
 require_relative 'mj'
 require_relative 'config/environments/defaults.rb'
 require_relative "config/environments/#{settings.environment}"