fix: 修复非第三方源安装incus时找不到ui安装包的问题

Author: spiritLHLS

docs/en/guide/incus/incus_extra_config.md

@@ -89,4 +89,26 @@ Then you can type in your browser
 
 ```https://your_public_ipv4_address:8443```
 
-You can enter the official visualization panel, subsequent operation configuration in accordance with the UI prompts can be operated.
+You can enter the official visualization panel, subsequent operation configuration in accordance with the UI prompts can be operated.
+
+If you receive a prompt stating that the UI installation package cannot be found, this indicates that your previous installation utilized the official Incus repository rather than the Zabbly repository.
+
+In this case, you need to add an additional repository. Assuming you are using Debian 13, you can add the repository using the following command before attempting the installation again:
+
+```shell
+sudo -i
+mkdir -p /etc/apt/keyrings/
+curl -fsSL https://pkgs.zabbly.com/key.asc | gpg --dearmor -o /etc/apt/keyrings/zabbly.gpg
+sh -c 'cat <<EOF > /etc/apt/sources.list.d/zabbly-incus-stable.sources
+Enabled: yes
+Types: deb
+URIs: https://pkgs.zabbly.com/incus/stable
+Suites: $(. /etc/os-release && echo ${VERSION_CODENAME})
+Components: main
+Architectures: $(dpkg --print-architecture)
+Signed-By: /etc/apt/keyrings/zabbly.gpg
+EOF'
+apt-get update
+```
+
+For instructions on adding sources to other systems, refer to the official repository documentation at <https://github.com/zabbly/incus?tab=readme-ov-file#installation>.

docs/guide/incus/incus_extra_config.md

@@ -101,4 +101,26 @@ incus config set core.https_address [::]
 
 ```https://你的公网IPV4地址:8443```
 
-即可进入官方可视化操作面板，后续的操作配置按照UI提示操作即可
+即可进入官方可视化操作面板，后续的操作配置按照UI提示操作即可
+
+如果提示找不到ui安装包，那么说明你之前使用的是官方的incus源安装的环境，不是走的zabbly的源
+
+此时需要额外添加源，假设你使用的是debian13系统，可使用以下命令添加源后再尝试安装：
+
+```shell
+sudo -i
+mkdir -p /etc/apt/keyrings/
+curl -fsSL https://pkgs.zabbly.com/key.asc | gpg --dearmor -o /etc/apt/keyrings/zabbly.gpg
+sh -c 'cat <<EOF > /etc/apt/sources.list.d/zabbly-incus-stable.sources
+Enabled: yes
+Types: deb
+URIs: https://pkgs.zabbly.com/incus/stable
+Suites: $(. /etc/os-release && echo ${VERSION_CODENAME})
+Components: main
+Architectures: $(dpkg --print-architecture)
+Signed-By: /etc/apt/keyrings/zabbly.gpg
+EOF'
+apt-get update
+```
+
+其他系统如何添加源可参考 <https://github.com/zabbly/incus?tab=readme-ov-file#installation> 官方仓库的说明