LXC backend

docker/serverspec/Gemfile

@@ -1,6 +1,7 @@
 source 'https://rubygems.org'
 
 gem 'rspec'
+gem 'lxc-extra', github: 'ranjib/lxc-extra' if RUBY_PLATFORM.match(/linux/)
 gem 'serverspec'
 gem 'docker-api'
 gem 'rspec_junit_formatter', git: 'git@github.com:circleci/rspec_junit_formatter.git'

docker/serverspec/spec/spec_helper.rb

@@ -17,18 +17,10 @@
 if ENV['CIRCLECI']
   module Docker
     class Container
-      def exec(command, opts = {}, &block)
-        command[2] = command[2].inspect
-        cmd = %Q{sudo lxc-attach -n #{self.id} -- #{command.join(' ')}}
-        stdin, stdout, stderr, wait_thread = Open3.popen3 cmd
-        [stdout.read, [stderr.read], wait_thread.value.exitstatus]
-      end
-
       def remove(options={})
         # do not delete container
       end
       alias_method :delete, :remove
-      alias_method :kill, :remove
     end
   end
 end