title: How do I mount a volume in a docker container in .gitlab-ci.yml?
body: <p>I'm using <code>.gitlab-ci.yml</code> and docker as a GitLab CI runner on an Android project. At the end of the test run, <code>gradlew</code> saves test results in xml and html under the build directory:</p>
  
  <pre><code>Finished generating test XML results (0.001 secs) into: /builds/org/project/sdk/build/test-results/release
   Generating HTML test report...
  Finished generating test html results (0.002 secs) into: /builds/org/project/sdk/build/reports/tests/release
  </code></pre>
  
  <p>I'd like to have access to these files, but the <a href="http://docs.gitlab.com/ce/ci/docker/using_docker_images.html" rel="noreferrer">documentation</a> doesn't mention how to mount a volume like one would with <code>docker run -v &lt;path&gt;:/builds/org/...</code>.</p>