added os detection

installer.sh

@@ -2,23 +2,33 @@
 
 set -e
 
-# Install Ruby and the Ruby dependency 'webrick'
-if ! command -v ruby &> /dev/null; then
-    echo "Installing Ruby..."
-    sudo apt-get update
-    sudo apt-get install -y ruby-full
-fi
+# Detect the operating system
+OS=$(awk -F= '/^NAME/{print $2}' /etc/os-release)
 
+# Install Ruby, Nginx, and Git
+case $OS in
+  "CentOS Linux"|"Fedora")
+    sudo yum install -y ruby nginx git
+    ;;
+  "Arch Linux")
+    sudo pacman -Syu --noconfirm ruby nginx git
+    ;;
+  "Debian GNU/Linux"|"Ubuntu"|"Raspbian GNU/Linux")
+    sudo apt-get update
+    sudo apt-get install -y ruby nginx git
+    ;;
+  *)
+    echo "Unsupported operating system: $OS"
+    exit 1
+    ;;
+esac
+
+# Install the 'webrick' gem
 if ! gem list webrick -i > /dev/null; then
     echo "Installing webrick..."
     gem install webrick
 fi
 
-# Install Nginx and enable the service
-if ! command -v nginx &> /dev/null; then
-    echo "Installing Nginx..."
-    sudo apt-get install -y nginx
-fi
 
 echo "Enabling Nginx service..."
 sudo systemctl enable nginx