Add repo release

docs/installation/package-manager.md

@@ -4,6 +4,35 @@ icon: material/package
 
 # Package Manager
 
+## :material-tram: Repository Installation
+
+=== ":material-debian: Debian / APT"
+
+    ```bash
+    sudo curl -fsSL https://deb.sagernet.org/gpg.key -o /etc/apt/keyrings/sagernet.asc
+    sudo chmod a+r /etc/apt/keyrings/sagernet.asc
+    echo "deb [arch=`dpkg --print-architecture` signed-by=/etc/apt/keyrings/sagernet.asc] https://deb.sagernet.org/ * *" | \
+      sudo tee /etc/apt/sources.list.d/sagernet.list > /dev/null
+    sudo apt-get update
+    sudo apt-get install sing-box # or sing-box-beta
+    ```
+
+=== ":material-redhat: Redhat / DNF"
+
+    ```bash
+    sudo dnf -y install dnf-plugins-core
+    sudo dnf config-manager --add-repo https://sing-box.app/rpm.repo
+    sudo dnf install sing-box # or sing-box-beta
+    ```
+
+=== ":material-redhat: CentOS / YUM"
+
+    ```bash
+    sudo yum install -y yum-utils
+    sudo yum-config-manager --add-repo https://sing-box.app/rpm.repo
+    sudo yum install sing-box # or sing-box-beta
+    ```
+
 ## :material-download-box: Manual Installation
 
 === ":material-debian: Debian / DEB"

docs/installation/package-manager.zh.md

@@ -4,6 +4,35 @@ icon: material/package
 
 # 包管理器
 
+## :material-tram: 仓库安装
+
+=== ":material-debian: Debian / APT"
+
+    ```bash
+    sudo curl -fsSL https://deb.sagernet.org/gpg.key -o /etc/apt/keyrings/sagernet.asc
+    sudo chmod a+r /etc/apt/keyrings/sagernet.asc
+    echo "deb [arch=`dpkg --print-architecture` signed-by=/etc/apt/keyrings/sagernet.asc] https://deb.sagernet.org/ * *" | \
+      sudo tee /etc/apt/sources.list.d/sagernet.list > /dev/null
+    sudo apt-get update
+    sudo apt-get install sing-box # or sing-box-beta
+    ```
+
+=== ":material-redhat: Redhat / DNF"
+
+    ```bash
+    sudo dnf -y install dnf-plugins-core
+    sudo dnf config-manager --add-repo https://sing-box.app/rpm.repo
+    sudo dnf install sing-box # or sing-box-beta
+    ```
+
+=== ":material-redhat: CentOS / YUM"
+
+    ```bash
+    sudo yum install -y yum-utils
+    sudo yum-config-manager --add-repo https://sing-box.app/rpm.repo
+    sudo yum install sing-box # or sing-box-beta
+    ```
+
 ## :material-download-box: 手动安装
 
 === ":material-debian: Debian / DEB"

docs/installation/tools/rpm.repo

@@ -0,0 +1,6 @@
+[sing-box]
+name=sing-box
+baseurl=https://rpm.sagernet.org/
+enabled=1
+gpgcheck=1
+gpgkey=https://deb.sagernet.org/gpg.key