title: Get the container id where the gitlab job is executed
body: <p>When I use gitlab with docker in the log of the job I can get this information:</p>
  
  <pre><code>Running with gitlab-ci-multi-runner 9.5.0 (413da38)
    on platform-docker-orc (2c06225e)
  Using Docker executor with image registry:5000/local_image: ...
  Using docker image sha256:db4434f2a9c3529af30397031df5bc1277f13882e0f6613a8c8f9c059645c04d for predefined container...
  Pulling docker image registry:5000/local_image ...
  Using docker image registry:5000/local_image ID=sha256:8d1cac8ae6371b01505e9cd3aaf654696cc144117a9c89dcd21cf4c0d9cfa709 for build container...
  Running on runner-2c06225e-project-99-concurrent-0 via a96c0c765ce7...
  </code></pre>
  
  <p>How can I get the container id where the gitlab job is executed?</p>