Update INSTALL Doc for Docker (#6215)

* Update INSTALL_cn.md

* Update INSTALL.md

Add  chapter "Use built Docker images".

docs/tutorials/INSTALL.md

@@ -110,6 +110,15 @@ Ran 7 tests in 12.816s
 OK
 ```
 
+## Use built Docker images
+
+> If you  do not have a Docker environment, please refer to [Docker](https://www.docker.com/).
+PaddleDetection provides built docker images with latest code. All you have to do is to **pull the docker image **and **run the docker image**. Then you can enjoy PaddleDetection without any extra action.
+
+Get these images and guidance in [docker hub](https://hub.docker.com/repository/docker/paddlecloud/paddledetection), including CPU, GPU, ROCm environment versions. 
+
+If you have some customized requirements about automatic building docker images, you can get it in github repo [PaddlePaddle/PaddleCloud](https://github.com/PaddlePaddle/PaddleCloud/tree/main/tekton).
+
 ## Inference demo
 
 **Congratulation!** Now you have installed PaddleDetection successfully and try our inference demo:

docs/tutorials/INSTALL_cn.md

@@ -103,6 +103,17 @@ Ran 7 tests in 12.816s
 OK
 ```
 
+## 使用Docker镜像
+
+> 如果您没有Docker运行环境，请参考[Docker官网](https://www.docker.com/)进行安装.
+
+PaddleDetection提供了带有最新代码的docker镜像供您使用，您只需要**拉取docker镜像 **，然后**运行docker镜像**，无需其他任何额外操作，即可开始使用PaddleDetection的所有功能。
+
+在[Docker Hub](https://hub.docker.com/repository/docker/paddlecloud/paddledetection)中获取这些镜像及相应的使用指南，包括CPU、GPU、ROCm版本。
+
+如果您对自动化制作docker镜像感兴趣，或有自定义需求，请访问[PaddlePaddle/PaddleCloud](https://github.com/PaddlePaddle/PaddleCloud/tree/main/tekton)做进一步了解。
+
+
 ## 快速体验
 
 **恭喜！** 您已经成功安装了PaddleDetection，接下来快速体验目标检测效果