add deploy recipe extracted from staging server

lib/support/deploy/deploy.sh

+# This is deploy script we use to update staging server
+# You can always modify it for your needs :)
+
+# If any command return non-zero status - stop deploy
+set -e
+
+echo 'Deploy: Stoping sidekiq..'
+cd /home/git/gitlab/ && sudo -u git -H bundle exec rake sidekiq:stop RAILS_ENV=production
+
+echo 'Deploy: Show deploy index page'
+sudo -u git -H cp /home/git/gitlab/public/deploy.html /home/git/gitlab/public/index.html
+
+echo 'Deploy: Starting backup...'
+cd /home/git/gitlab/ && sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production
+
+echo 'Deploy: Stop GitLab server'
+sudo service gitlab stop
+
+echo 'Deploy: Get latest code'
+cd /home/git/gitlab/
+
+# clean working directory
+sudo -u git -H git stash 
+
+# change branch to 
+sudo -u git -H git pull origin master
+
+echo 'Deploy: Bundle and migrate'
+
+# change it to your needs
+sudo -u git -H bundle --without postgres
+
+sudo -u git -H bundle exec rake db:migrate RAILS_ENV=production
+
+# return stashed changes (if necessary)
+# sudo -u git -H git stash pop
+
+
+echo 'Deploy: Starting GitLab server...'
+sudo service gitlab start
+
+sleep 10
+sudo -u git -H rm /home/git/gitlab/public/index.html
+echo 'Deploy: Done'