download missing file

build.sdcard/raspbianStretchDesktop.sh

@@ -197,6 +197,7 @@ if [ ${fingerprint} -lt 1 ]; then
   exit 1
 fi
 gpg --import ./laanwj-releases.asc
+sudo -u admin wget https://bitcoin.org/bin/bitcoin-core-${bitcoinVersion}/SHA256SUMS.asc
 verifyResult=$(gpg --verify SHA256SUMS.asc 2>&1)
 goodSignature=$(echo ${verifyResult} | grep 'Good signature' -c)
 echo "goodSignature(${goodSignature})"