Add scripts/static-analysis to run all the static analysers in one go

Signed-off-by: Rémy Coutable <remy@rymai.me>

.gitlab-ci.yml

@@ -267,15 +267,7 @@ static-analysis:
   <<: *except-docs
   stage: test
   script:
-    - bundle exec rake config_lint
-    - bundle exec rake flay
-    - bundle exec rake haml_lint
-    - bundle exec rake scss_lint
-    - bundle exec rake brakeman
-    - bundle exec license_finder
-    - scripts/lint-doc.sh
-    - yarn run eslint
-    - bundle exec "rubocop --require rubocop-rspec"
+    - scripts/static-analysis
 
 downtime_check:
   <<: *rake-exec

scripts/static-analysis

+#!/usr/bin/env ruby
+
+require ::File.expand_path('../lib/gitlab/popen', __dir__)
+
+tasks = [
+  %w[bundle exec rake config_lint],
+  %w[bundle exec rake flay],
+  %w[bundle exec rake haml_lint],
+  %w[bundle exec rake scss_lint],
+  %w[bundle exec rake brakeman],
+  %w[bundle exec license_finder],
+  %w[scripts/lint-doc.sh],
+  %w[yarn run eslint],
+  %w[bundle exec rubocop --require rubocop-rspec]
+]
+
+failed_tasks = tasks.reduce({}) do |failures, task|
+  output, status = Gitlab::Popen.popen(task)
+
+  puts "Running: #{task.join(' ')}"
+  puts output
+
+  failures[task.join(' ')] = output unless status.zero?
+
+  failures
+end
+
+if failed_tasks.empty?
+  puts 'All static analyses passed successfully.'
+else
+  puts "\n===================================================\n\n"
+  puts "Some static analyses failed:"
+
+  failed_tasks.each do |failed_task, output|
+    puts "\n**** #{failed_task} failed with the following error:\n\n"
+    puts output
+  end
+
+  exit 1
+end