code: protected static void insertLabels(CreateContainerCmd containerConfig, Run run) {
          // add tags
          Map<String, String> labels = containerConfig.getLabels();
          if (labels == null) labels = new HashMap<>();
  
          labels.put("YAD_PLUGIN", DockerShellStep.class.getName());
          labels.put("JENKINS_JOB_BASE_NAME", run.getParent().getName());
          labels.put("JENKINS_INSTANCE_IDENTITY",
                  new String(encodeBase64(InstanceIdentity.get().getPublic().getEncoded()), UTF_8));
  
          containerConfig.withLabels(labels);
      }
docs: Append some tags to identify who created this container.