Restrict OS support check to only Ubuntu

Author: MickLesk

ct/inventree.sh

@@ -29,15 +29,14 @@ function update_script() {
     exit
   fi
 
-  # Check for supported OS
-  if ! grep -qE "^ID=(ubuntu|debian)$" /etc/os-release; then
-    msg_error "Unsupported OS. InvenTree requires Ubuntu (20.04/22.04/24.04) or Debian (10/11/12)."
+  if ! grep -qE "^ID=(ubuntu)$" /etc/os-release; then
+    msg_error "Unsupported OS. InvenTree requires Ubuntu (20.04/22.04/24.04)."
     exit
   fi
 
   msg_info "Updating $APP"
-  $STD apt-get update
-  $STD apt-get install --only-upgrade inventree -y
+  $STD apt update
+  $STD apt install --only-upgrade inventree -y
   msg_ok "Updated $APP"
   exit
 }