optimize docs: install latest sealos version (labring#3638)

docs/4.0/docs/lifecycle-management/quick-start/installation.md

@@ -7,11 +7,26 @@ import TabItem from '@theme/TabItem';
 
 # Installing Sealos
 
+You can get the list of versions by running:
+
+```bash
+curl --silent "https://api.github.com/repos/labring/sealos/releases" | jq -r '.[].tag_name'
+```
+
+Note: While choosing the version, it's recommended to use a stable version. The versions like `v4.3.0-rcx`, `v4.3.0-alpha1` are pre-releases, use them with caution.
+
+Set the 'VERSION' environment variable to the latest VERSION number, or replace 'version' with the Sealos version you want to install:
+
+```shell
+VERSION=`curl -s https://api.github.com/repos/labring/sealos/releases/latest | grep -oE '"tag_name": "[^"]+"' | head -n1 | cut -d'"' -f4`
+```
+
 ## Binary Auto Download
 
 ```bash
-$ curl -sfL  https://raw.githubusercontent.com/labring/sealos/v4.2.0/scripts/install.sh \
-    | sh -s v4.2.0 labring/sealos
+curl -sfL https://raw.githubusercontent.com/labring/sealos/${VERSION}/scripts/install.sh |
+  sh - ${VERSION} labring/sealos
+
 ```
 
 ## Binary Manual Download
@@ -20,16 +35,16 @@ $ curl -sfL  https://raw.githubusercontent.com/labring/sealos/v4.2.0/scripts/ins
   <TabItem value="amd64" label="amd64" default>
 
 ```bash
-$ wget https://github.com/labring/sealos/releases/download/v4.2.0/sealos_4.2.0_linux_amd64.tar.gz \
-   && tar zxvf sealos_4.2.0_linux_amd64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
+$ wget https://github.com/labring/sealos/releases/download/${VERSION}/sealos_${VERSION#v}_linux_amd64.tar.gz \
+   && tar zxvf sealos_${VERSION#v}_linux_amd64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
 ```
 
   </TabItem>
   <TabItem value="arm64" label="arm64">
 
 ```bash
-$ wget https://github.com/labring/sealos/releases/download/v4.2.0/sealos_4.2.0_linux_arm64.tar.gz \
-   && tar zxvf sealos_4.2.0_linux_arm64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
+$ wget https://github.com/labring/sealos/releases/download/${VERSION}/sealos_${VERSION#v}_linux_arm64.tar.gz \
+   && tar zxvf sealos_${VERSION#v}_linux_arm64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
 ```
 
   </TabItem>

docs/4.0/i18n/zh-Hans/lifecycle-management/quick-start/installation.md

@@ -7,11 +7,26 @@ import TabItem from '@theme/TabItem';
 
 # 安装sealos
 
+你可以通过运行命令来获取版本列表:
+
+```shell
+curl --silent "https://api.github.com/repos/labring/sealos/releases" | jq -r '.[].tag_name'
+```
+
+> 注意:在选择版本时，建议使用稳定版本例如`v4.3.0`。像`v4.3.0-rc1`、`v4.3.0-alpha1`这样的版本是预发布版，请谨慎使用。
+
+设置`VERSION`环境变量为latest版本号，或者将`VERSION`替换为您要安装的Sealos版本:
+
+```shell
+VERSION=`curl -s https://api.github.com/repos/labring/sealos/releases/latest | grep -oE '"tag_name": "[^"]+"' | head -n1 | cut -d'"' -f4`
+```
+
 ## 二进制自动下载
 
 ```bash
-$ curl -sfL  https://raw.githubusercontent.com/labring/sealos/v4.2.0/scripts/install.sh \
-    | sh -s v4.2.0 labring/sealos
+curl -sfL https://raw.githubusercontent.com/labring/sealos/${VERSION}/scripts/install.sh |
+  sh - ${VERSION} labring/sealos
+
 ```
 
 ## 二进制手动下载
@@ -20,16 +35,16 @@ $ curl -sfL  https://raw.githubusercontent.com/labring/sealos/v4.2.0/scripts/ins
   <TabItem value="amd64" label="amd64" default>
 
 ```bash
-$ wget https://github.com/labring/sealos/releases/download/v4.2.0/sealos_4.2.0_linux_amd64.tar.gz \
-   && tar zxvf sealos_4.2.0_linux_amd64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
+$ wget https://github.com/labring/sealos/releases/download/${VERSION}/sealos_${VERSION#v}_linux_amd64.tar.gz \
+   && tar zxvf sealos_${VERSION#v}_linux_amd64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
 ```
 
   </TabItem>
   <TabItem value="arm64" label="arm64">
 
 ```bash
-$ wget https://github.com/labring/sealos/releases/download/v4.2.0/sealos_4.2.0_linux_arm64.tar.gz \
-   && tar zxvf sealos_4.2.0_linux_arm64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
+$ wget https://github.com/labring/sealos/releases/download/${VERSION}/sealos_${VERSION#v}_linux_arm64.tar.gz \
+   && tar zxvf sealos_${VERSION#v}_linux_arm64.tar.gz sealos && chmod +x sealos && mv sealos /usr/bin
 ```
 
   </TabItem>

scripts/install.sh

@@ -100,6 +100,10 @@ verify_downloader() {
 
 get_release_version() {
     VERSION=$1
+    # If the incoming version number is latest, get the latest version number from github
+    if [ "$VERSION" = "latest" ]; then
+        VERSION=$(curl -s https://api.github.com/repos/${OWN_REPO}/releases/latest | grep tag_name | cut -d '"' -f 4)
+    fi
     info "Using ${VERSION} as release"
     OWN_REPO=$2
     if [ -z "$OWN_REPO" ]; then