title: Where is the Nix configuration located for the nix image on dockerhub?
body: <p>According to <a href="https://chris-martin.org/2015/installing-nixos" rel="nofollow noreferrer">https://chris-martin.org/2015/installing-nixos</a> there is a <code>/etc/nixos/configuration.nix</code> file present.</p>
  
  <p>I'm using the docker container from <a href="https://hub.docker.com/r/nixos/nix/" rel="nofollow noreferrer">https://hub.docker.com/r/nixos/nix/</a> and running</p>
  
  <pre><code>find . -name "configuration.nix"
  </code></pre>
  
  <p>within the container returns no results.</p>
  
  <p>Where is this configuration located?</p>