public void setContainerExposedPorts(@Nullable Map<String, Map<String, String>> exposedPorts) {
    config.ExposedPorts = exposedPorts;
  }
Sets retries on HealthCheck, creates an empty HealthCheck object if necessary.

@param retries the number of retries to configure
jib-core/src/main/java/com/google/cloud/tools/jib/image/json/ContainerConfigurationTemplate.java