minor cleanup of build artifacts

create-image.sh

@@ -70,6 +70,8 @@ script -q -c "appliance-creator \
     --debug \
     --cache /root/cache \
     --verbose" | tee "${APPLIANCE_NAME}.log" || exit 1
+# the script command creates a file called typescript
+rm -vf typescript
 
 if [[ -d "${APPLIANCE_NAME}" ]]; then
     pushd "${APPLIANCE_NAME}" || exit 1