Merge pull request #94 from i11/master

Fix deprecated -dns argument. Add host support

Author: portertech

lib/kitchen/driver/docker.rb

@@ -217,7 +217,8 @@ def parse_container_id(output)
       def build_run_command(image_id)
         cmd = "run -d -p 22"
         Array(config[:forward]).each {|port| cmd << " -p #{port}"}
-        Array(config[:dns]).each {|dns| cmd << " -dns #{dns}"}
+        Array(config[:dns]).each {|dns| cmd << " --dns #{dns}"}
+        Array(config[:add_host]).each {|host, ip| cmd << " --add-host=#{host}:#{ip}"}
         Array(config[:volume]).each {|volume| cmd << " -v #{volume}"}
         Array(config[:volumes_from]).each {|container| cmd << " --volumes-from #{container}"}
         Array(config[:links]).each {|link| cmd << " --link #{link}"}