title: What is the signification of docker run's mount options (type, source, target)?
body: <pre><code>docker run -p 8500:8500 \
      --mount type=bind,source=$(pwd)/models/mnist,target=/models/mnist \
      -e MODEL_NAME=mnist \
      -t tensorflow/serving &amp;
  </code></pre>
  
  <p>What does parameters <code>--mount</code>, <code>type</code>, <code>source</code>, <code>target</code> and symbol <code>&amp;</code> mean or work in docker?</p>
  
  <p>I have run commands <code>docker --help</code> and <code>docker run --help</code>, but still confused with these commands above.</p>