docs: add docker pull tips (#17307)

* docs: add docker pull tips

* docs: add docker pull tips

docs/en/05-get-started/01-docker.md

@@ -11,7 +11,19 @@ This document describes how to install TDengine in a Docker container and perfor
 
 ## Run TDengine
 
-If Docker is already installed on your computer, run the following command:
+If Docker is already installed on your computer, pull the latest TDengine Docker container image:
+
+```shell
+docker pull tdengine/tdengine:latest
+```
+
+Or the container image of specific version:
+
+```shell
+docker pull tdengine/tdengine:3.0.1.4
+```
+
+And then run the following command:
 
 ```shell
 docker run -d -p 6030:6030 -p 6041:6041 -p 6043-6049:6043-6049 -p 6043-6049:6043-6049/udp tdengine/tdengine

docs/zh/05-get-started/01-docker.md

@@ -8,7 +8,19 @@ description: 使用 Docker 快速体验 TDengine 的高效写入和查询
 
 ## 启动 TDengine
 
-如果已经安装了 Docker，只需执行下面的命令：
+如果已经安装了 Docker，首先拉取最新的 TDengine 容器镜像：
+
+```shell
+docker pull tdengine/tdengine:latest
+```
+
+或者指定版本的容器镜像：
+
+```shell
+docker pull tdengine/tdengine:3.0.1.4
+```
+
+然后只需执行下面的命令：
 
 ```shell
 docker run -d -p 6030:6030 -p 6041:6041 -p 6043-6049:6043-6049 -p 6043-6049:6043-6049/udp tdengine/tdengine