Add files

app/controllers/docker_manager/admin_controller.rb

@@ -15,7 +15,7 @@ module DockerManager
         repos << DockerManager::GitRepo.new(File.dirname(p.path), p.name)
       end
       repos.map! do |r|
-        result = {name: r.name, path: r.path }
+        result = {name: r.name, path: r.path, branch: r.branch }
         if r.valid?
           result[:id] = r.name.downcase.gsub(/[^a-z]/, '_').gsub(/_+/, '_').sub(/_$/, '')
           result[:version] = r.latest_local_commit

lib/docker_manager/git_repo.rb

@@ -1,11 +1,14 @@
 # like Grit just very very minimal
 class DockerManager::GitRepo
-  attr_reader :path, :name
+  attr_reader :path, :name, :branch
 
   def initialize(path, name=nil)
     @path = path
     @name = name
     @memoize = {}
+
+    # For discourse proper, return tracking branch
+    @branch = (path == Rails.root.to_s) ? tracking_branch : 'master'
   end
 
   def start_upgrading