1 files changed, 14 insertions, 2 deletions
diff --git a/Gemfile b/Gemfile
index 5aaba73..1e5f5f3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,16 +2,28 @@ source "https://rubygems.org"
 
 gemspec name: "mixlib-shellout"
 
-group(:test) do
+group :docs do
+  gem "yard"
+  gem "redcarpet"
+  gem "github-markup"
+end
+
+group :test do
   gem "chefstyle", git: "https://github.com/chef/chefstyle.git", branch: "master"
   gem "rspec_junit_formatter"
   gem "rspec", "~> 3.0"
   gem "rake"
 end
 
-group(:development) do
+group :development do
   gem "pry"
   gem "pry-byebug"
   gem "pry-stack_explorer"
   gem "rb-readline"
 end
+
+instance_eval(ENV["GEMFILE_MOD"]) if ENV["GEMFILE_MOD"]
+
+# If you want to load debugging tools into the bundle exec sandbox,
+# add these additional dependencies into Gemfile.local
+eval_gemfile(__FILE__ + ".local") if File.exist?(__FILE__ + ".local")