Update supported Proxmox VE versions to include 9.1

The pve_check function now allows Proxmox VE 9.1 in addition to 9.0 and 8.x. Error messages and comments have been updated to reflect the expanded support.

scripts/core/build.func

@@ -60,7 +60,7 @@ root_check() {
 }
 
 # This function checks the version of Proxmox Virtual Environment (PVE) and exits if the version is not supported.
-# Supported: Proxmox VE 8.0.x – 8.9.x and 9.0 (NOT 9.1+)
+# Supported: Proxmox VE 8.0.x – 8.9.x, 9.0 and 9.1
 pve_check() {
   local PVE_VER
   PVE_VER="$(pveversion | awk -F'/' '{print $2}' | awk -F'-' '{print $1}')"
@@ -76,12 +76,12 @@ pve_check() {
     return 0
   fi
 
-  # Check for Proxmox VE 9.x: allow ONLY 9.0
+  # Check for Proxmox VE 9.x: allow 9.0 and 9.1
   if [[ "$PVE_VER" =~ ^9\.([0-9]+) ]]; then
     local MINOR="${BASH_REMATCH[1]}"
-    if ((MINOR != 0)); then
+    if ((MINOR < 0 || MINOR > 1)); then
-      msg_error "This version of Proxmox VE is not yet supported."
+      msg_error "This version of Proxmox VE is not supported."
-      msg_error "Supported: Proxmox VE version 9.0"
+      msg_error "Supported: Proxmox VE version 9.0 – 9.1"
       exit 1
     fi
     return 0
@@ -89,7 +89,7 @@ pve_check() {
 
   # All other unsupported versions
   msg_error "This version of Proxmox VE is not supported."
-  msg_error "Supported versions: Proxmox VE 8.0 – 8.x or 9.0"
+  msg_error "Supported versions: Proxmox VE 8.0 – 8.x or 9.0 – 9.1"
   exit 1
 }