return StringUtil.EMPTY;
    }

    /**
     * Gets the override configuration path from environment variable when running in Docker.
     * This allows customization of the configuration directory location in containerized deployments.
     *
     * @return an OptionalEntity containing the override configuration path if set and running in Docker,
     *         or empty OptionalEntity otherwise
     */

  - [beta] Kubelet integrates with memcg notification API to detect when a hard eviction threshold is crossed ([kubernetes/features#125](https://github.com/kubernetes/enhancements/issues/125))
  - [beta] Introducing the beta version containerized node conformance test gcr.io/google_containers/node-test:0.2 for users to verify node setup. ([docs](http://kubernetes.io/docs/admin/node-conformance/)) ([kubernetes/features#84](https://github.com/kubernetes/enhancements/issues/84))

* Fix goroutine leak in ssh-tunnel healthcheck. ([#24487](https://github.com/kubernetes/kubernetes/pull/24487), [@cjcullen](https://github.com/cjcullen))
* Fixed mounting with containerized kubelet ([#23435](https://github.com/kubernetes/kubernetes/pull/23435), [@jsafrane](https://github.com/jsafrane))

    *   Dynamic provisioning is not supported with this feature yet.
*   [alpha] Containerized mount utilities
    *   Allow mount utilities, used to mount volumes, to run inside a container instead of on the host.
*   Bug Fixes

* fix nsenter GetFileType issue in containerized kubelet ([#62467](https://github.com/kubernetes/kubernetes/pull/62467), [@andyzhangx](https://github.com/andyzhangx))

* e2e: fix error checking in kubelet stats ([#24205](https://github.com/kubernetes/kubernetes/pull/24205), [@yujuhong](https://github.com/yujuhong))
* Fixed mounting with containerized kubelet ([#23435](https://github.com/kubernetes/kubernetes/pull/23435), [@jsafrane](https://github.com/jsafrane))

- change default azure file mount permission to 0777 ([#69854](https://github.com/kubernetes/kubernetes/pull/69854), [@andyzhangx](https://github.com/andyzhangx))
- Fixed subpath in containerized kubelet. ([#69565](https://github.com/kubernetes/kubernetes/pull/69565), [@jsafrane](https://github.com/jsafrane))

* ScaleIO driver completely removes dependency on drv_cfg binary so a Kubernetes cluster can easily run a containerized kubelet. ([#54956](https://github.com/kubernetes/kubernetes/pull/54956), [@vladimirvivien](https://github.com/vladimirvivien))



# v1.8.3

  - The `--containerized` flag is deprecated and will be removed in a future release ([#74267](https://github.com/kubernetes/kubernetes/pull/74267), [@dims](https://github.com/dims))

- hyperkube

  - Removed deprecated flag `--include-uninitialized`. ([#80337](https://github.com/kubernetes/kubernetes/pull/80337), [@draveness](https://github.com/draveness))

- kubelet

  - the `--containerized` flag was deprecated in 1.14 and has been removed ([#80043](https://github.com/kubernetes/kubernetes/pull/80043), [@dims](https://github.com/dims))