title: Sonatype Nexus 3 504 Gateway Timeout when pushing to hosted Docker repository
body: <p>I am getting 504 GATEWAY_TIMEOUT when pushing to a hosted Docker repo on Sonatype Nexus 3. I'm trying to push a multi-GB layer:</p>
  
  <pre><code>    451c9f0946ad: Image already exists
      97444a62d0da: Image already exists
      3acdb070c7f5: Image already exists
      78362681bd49: Image already exists
      5890a244c36a: Pushing [==================================================&gt;] 2.403 GB
      Received unexpected HTTP status: 504 GATEWAY_TIMEOUT
  </code></pre>
  
  <p>It seems to error after about 4 to 4.5 minutes. I don't see a way to adjust the timeout on the Nexus side. Any ideas?</p>