Refactor get_rocky()

quickget

@@ -1124,17 +1124,17 @@ function get_zorin() {
 function get_rocky() {
     local HASH=""
     local ISO=""
+    local ISOTYPE="minimal"
     local URL=""
 
-    local arch="x86_64"
-    local baseurl="https://download.rockylinux.org/pub/rocky/${RELEASE}/isos/${arch}"
-
     validate_release "releases_rockylinux"
-    ISO="Rocky-${RELEASE}-${arch}-${ISOTYPE}.iso"
-    URL="${baseurl}/${ISO}"
-    HASH=$(wget -q -O- "${baseurl}/CHECKSUM" | grep "SHA256 (${ISO})" | grep -E -i -w -o '[0-9a-z]{64}')
-
-    web_get "${URL}" "${VM_PATH}"
+    if [ -n "${1}" ]; then
+      ISOTYPE="${1}"
+    fi
+    URL="https://download.rockylinux.org/pub/rocky/${RELEASE}/isos/x86_64"
+    ISO="Rocky-${RELEASE}-x86_64-${ISOTYPE}.iso"
+    HASH=$(wget -q -O- "${URL}/CHECKSUM" | grep "SHA256" | grep "${ISO}" | cut -d' ' -f4)
+    web_get "${URL}/${ISO}" "${VM_PATH}"
     check_hash "${ISO}" "${HASH}"
     make_vm_config "${ISO}"
 }