[Docs] Udpate README.md.

Signed-off-by: Tongxuan Liu <[email protected]>

Author: liutongxuan

README.md

@@ -1,50 +1,49 @@
------------------
-| **`Documentation`** |
-|-----------------|
-| [![Documentation](https://img.shields.io/badge/api-reference-blue.svg)](https://www.tensorflow.org/api_docs/python/tf/estimator) |
+# DeepRec Estimator
 
-TensorFlow Estimator is a high-level TensorFlow API that greatly simplifies machine learning programming.
+Estimator for DeepRec is based on TensorFlow Estimator, which is high-level TensorFlow API that greatly simplifies machine learning programming.
 Estimators encapsulate training, evaluation, prediction, and exporting for your model.
 
-## Getting Started
-
-See our Estimator [getting started guide](https://www.tensorflow.org/guide/estimators) for an introduction to the Estimator APIs.
+New features in DeepRec Estimator:
+-   Support GRPC++ for large scale distributed training in parameter server mode.
+-   Support StarServer for large scale distributed training in parameter server mode.
 
 ## Installation
 
-`tf.estimator` is installed when you install the TensorFlow pip package. See [Installing TensorFlow](https://www.tensorflow.org/get_started/os_setup.html) for instructions.
+### Prepare for build
 
-## Developing
+**CPU Dev Docker**
 
-If you want to build TensorFlow Estimator locally, you will need to
-[install Bazel](https://docs.bazel.build/versions/master/install.html) and
-[install TensorFlow](https://www.tensorflow.org/install/pip).
+| GCC Version | Python Version |                           IMAGE                           |
+| ----------- | -------------- | --------------------------------------------------------- |
+|   9.4.0     |    3.8.10      | alideeprec/deeprec-build:deeprec-dev-cpu-py38-ubuntu20.04 |
 
-```sh
-# To build TensorFlow Estimator whl file.
-bazel build //tensorflow_estimator/tools/pip_package:build_pip_package
-bazel-bin/tensorflow_estimator/tools/pip_package/build_pip_package /tmp/estimator_pip
+**GPU(cuda11.6) Dev Docker**
+
+| GCC Version | Python Version | CUDA VERSION |                           IMAGE                                 |
+| ----------- | -------------- | ------------ | --------------------------------------------------------------- |
+|    9.4.0    |    3.8.10      | CUDA 11.6.2  | alideeprec/deeprec-build:deeprec-dev-gpu-py38-cu116-ubuntu20.04 |
+
+### Build from source
 
-# To run all Estimator tests
-bazel test //tensorflow_estimator/...
+Develop Branch：master, Latest Release Branch: deeprec2302
+
+**Build Package Builder**
+
+```bash
+bazel build //tensorflow_estimator/tools/pip_package:build_pip_package
 ```
 
-## Contribution guidelines
+**Build Package**
 
-If you want to contribute to TensorFlow Estimator, be sure to review the [contribution
-guidelines](CONTRIBUTING.md).
+```bash
+bazel-bin/tensorflow_estimator/tools/pip_package/build_pip_package /tmp/estimator_whl
+```
 
-**Note that this repository is included as a component of the main TensorFlow
-package, and any issues encountered while using Estimators should be filed under
-[TensorFlow GitHub Issues](https://github.com/tensorflow/tensorflow/issues),
-as we do not separately track issues in this repository. You can link this
-repository in any issues created as necessary.**
+Installing DeepRec will install the native tensorflow-estimator by default, please reinstall the compiled Estimator.
 
-Please see
-[TensorFlow Discuss](https://groups.google.com/a/tensorflow.org/forum/#!forum/discuss) for general questions
-and discussion and please direct specific questions to
-[Stack Overflow](https://stackoverflow.com/questions/tagged/tensorflow).
+## More details
 
-## License
+* [GRPC++](https://github.com/DeepRec-AI/DeepRec/blob/main/docs/docs_en/GRPC%2B%2B.md)
+* [StarServer](https://github.com/DeepRec-AI/DeepRec/blob/main/docs/docs_en/StarServer.md)
 
-[Apache License 2.0](LICENSE)
+See TensorFlow Estimator [getting started guide](https://www.tensorflow.org/guide/estimators) for an introduction to the Estimator APIs.