Update script to handle version changes, and fail if not 13

Author: antonym

settings.sh

@@ -1,4 +1,4 @@
-URL="https://cdimage.debian.org/debian-cd/13.0.0-live/amd64/iso-hybrid/debian-live-REPLACE_VERSION-amd64-standard.iso"
+URL="https://cdimage.debian.org/debian-cd/current-live/amd64/iso-hybrid/debian-live-REPLACE_VERSION-amd64-standard.iso"
 TYPE=file
 CONTENTS="\
 live/initrd.img|initrd

version.sh

@@ -1,4 +1,13 @@
 #!/bin/bash
 set -e
-VERSION=$(curl -sfL https://cdimage.debian.org/debian-cd/13.0.0-live/amd64/iso-hybrid/SHA256SUMS | grep 'standard.iso' | grep -Po "(\d+\.)+\d+" | head -n1)
+
+MAJOR_VERSION="13"
+
+VERSION=$(curl -sfL https://cdimage.debian.org/debian-cd/current-live/amd64/iso-hybrid/SHA256SUMS | grep 'standard.iso' | grep -Po "(\d+\.)+\d+" | head -n1)
+
+if [[ "${VERSION}" != "${MAJOR_VERSION}."* ]]; then
+    echo "Error: Version is not ${MAJOR_VERSION}. Exiting."
+    exit 1
+fi
+
 echo "${VERSION}"