How to configuration Redmine with puma and running on nginx (based on Gitlab's installation)

Redmine installation

Add config/puma.ruby 
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cd /home/redmine/redmine
sudo -u redmine -H curl --output config/puma.rb https://gist.github.com/quickwango/6043161/raw/fdfe2a865c3a0afe912c8784c971ea7ca3e64cfd/puma.rb
 
Install Init Script
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Download the init script (will be /etc/init.d/redmine):
 
sudo curl --output /etc/init.d/redmine https://gist.github.com/quickwango/6043167/raw/fe35c2a55f616938e2a55586da43749315b49f5b/redmine
sudo chmod +x /etc/init.d/redmine
Make Redmine start on boot:
 
sudo update-rc.d redmine defaults 21
 
Nginx - add config to default side
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sudo curl --output /etc/nginx/sites-available/redmine https://gist.github.com/thanhhh/5610742/raw/862ed543ba4a46611c72cf7f29b5671046d93857/gistfile1.txt
sudo ln -s /etc/nginx/sites-available/redmine /etc/nginx/sites-enabled/redmine