Add rake tasks for common build process

Rakefile

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+desc 'Cleanup old build files'
+task :clean do
+  sh('sudo rm -rf out')
+  sh('rm build_tools*.tar.gz')
+end
+
+desc 'Build version anew'
+task build: :clean do
+  sh('mkdir out')
+  sh('docker build --tag onlyoffice-document-editors-builder .')
+  sh("docker run -v #{Dir.pwd}/out:/build_tools/out onlyoffice-document-editors-builder")
+end
+
+desc 'Archive current build version'
+task :archive do
+  commit_hash = `git rev-parse --short HEAD`.strip
+  branch = `git rev-parse --abbrev-ref HEAD`.gsub('/', '_').strip
+  current_data = Time.now.strftime('%Y.%m.%d-%H.%M')
+  archive_name = "build_tools-#{branch}-#{commit_hash}-#{current_data}.tar.gz"
+  sh("tar -zcvf #{archive_name} out")
+end