title: What is the purpose of buildResources folder in electron-builder building process?
body: <p>I'm reading through <code>electron</code> and <code>electron-builder</code> docs, but I still do not quite understand what is the purpose of the <code>buildResources</code> folder?</p>
  
  <p>Here's what a configuration doc for <a href="https://www.electron.build/configuration/configuration#Configuration-copyright" rel="noreferrer">electron-builder</a> says:</p>
  
  <blockquote>
    <p><strong><code>buildResources</code> = build</strong> <em>String</em> - The path to build resources.</p>
  </blockquote>
  
  <p>Kind of self-explanatory... But how or when they are involved in the build process, especially having that:</p>
  
  <blockquote>
    <p>...build resources is not packed into the app. If you need to use some
    files, e.g. as tray icon, please include required files explicitly</p>
  </blockquote>
  
  <p>Can we simply put those icon files in an arbitrary folder and then copy over into the <code>app/</code> manually (since we need to include <code>buildResources</code> manually anyway)?</p>