Map<String, String> getLabels() {
    String property = getProperty(PropertyNames.CONTAINER_LABELS);
    if (property != null) {
      return ConfigurationPropertyValidator.parseMapProperty(property);
    }
    return container.labels;
  }
Gets the configured labels.

@return the configured labels
jib-maven-plugin/src/main/java/com/google/cloud/tools/jib/maven/JibPluginConfiguration.java