Rakefile in assembly-image-1.7.0 vs Rakefile in assembly-image-1.7.1

@@ -1,8 +1,19 @@
-require 'bundler/gem_tasks'
+# frozen_string_literal: true
 
+require 'bundler/setup' # Set up gems listed in the Gemfile.
 require 'rspec/core/rake_task'
+require 'rubocop/rake_task'
+require 'bundler/gem_tasks'
 
-desc 'Run specs'
+desc 'Run style checker'
+RuboCop::RakeTask.new(:rubocop) do |task|
+  task.fail_on_error = true
+end
+
 RSpec::Core::RakeTask.new(:spec)
 
-task :default => :spec
+task ci: [:rubocop] do
+  Rake::Task['spec'].invoke
+end
+
+task default: :ci