title: Upgrading NGINX: apt-get candidate version
body: <p>I've installed nginx-light on my Google Compute Engine instance (Debian Wheezy). I installed with apt-get install nginx-light, which installed NGINX version 1.2.1 (specifically: 1.2.1-2.2+wheezy3).</p>
  
  <p>Its working fine, but I was just over at NGINX and realized this is a very old version from like 2012, and that the latest stable version is 1.6.2. But apt-get upgrade nginx-light doesn't upgrade the release it seems. I'm not that familiar with apt-get so I've been searching for tips. I found a reference to the command: apt-cache policy nginx-light.  Running that I get:</p>
  
  <pre><code>nginx-light:
    Installed: 1.2.1-2.2+wheezy3
    Candidate: 1.2.1-2.2+wheezy3
    Version table:
       1.6.2-5~bpo70+1 0
          100 http://gce_debian_mirror.storage.googleapis.com/ wheezy-backports/main amd64 Packages
          100 http://http.debian.net/debian/ wheezy-backports/main amd64 Packages
   *** 1.2.1-2.2+wheezy3 0
          500 http://gce_debian_mirror.storage.googleapis.com/ wheezy/main amd64 Packages
          500 http://security.debian.org/ wheezy/updates/main amd64 Packages
          500 http://http.debian.net/debian/ wheezy/main amd64 Packages
          100 /var/lib/dpkg/status
  </code></pre>
  
  <p>So it shows 1.6.2 as available in the version table. A little more research indicates that the pin-value (100) of this version correlates to "NoAutomatic" and "ButAutomaticUpgrades". A little more searching tells me these states indicate that the upgrade to that version isn't automatic, it must be explicit.</p>
  
  <p>It seems the solution has to do with version pinning, but I'm not finding clear enough info on that to be confident about exactly what to do. So I have a  few questions if anybody has any insight.</p>
  
  <ol>
  <li>Do you know of a good reason the upgrade to 1.6.2 wouldn't be
  automatic? Any reason to stay on 1.2.1? This will be a production
  web server for a fairly small web site (basically a startup home
  page) running PHP / Wordpress. </li>
  <li>How do I force apt-get upgrade to use 1.6.2 as the candidate
  release?</li>
  <li>What brought me here was setting up Google PageSpeed modules. The
  instructions involve building NGINX 1.6.2 from sources with the GPSM
  linked in. But I don't want to confuse the package manager or mess
  anything up by building my own NGINX if I don't have to. Will I need
  to build from sources if I want to install GPSM into NGINX?</li>
  </ol>
  
  <p>The website is already running great, and super fast with CloudFlare. But I thought I would experiment with Google Page Speed- but not if its going to be too much trouble.</p>