title: How to add some content to all pages on virtual host in nginx?
body: <p>I have different static websites configured as virtual hosts in nginx.</p>
  
  <p>Every website is multiple .html files (lots of code is duplicated).</p>
  
  <p>How can I add scripts/styles to all pages at one domain at once via nginx config? Is this possible?</p>
  
  <p>For example, I want to add googletagmanager script to all pages (inside ) and  for google-site-verification without touching these files.</p>