then

src/freedombone-image-makefile

 ARCHIVE = $(IMAGE).xz
 SIGNATURE = $(ARCHIVE).sig
 OWNER = 1000
-if [ ! "$CONTINUOUS_INTEGRATION" ];
+if [ ! "$CONTINUOUS_INTEGRATION" ]; then
     XZ = xz --no-warn --verbose --keep --threads=0 -3
     SIGN = -gpg --output $(SIGNATURE) --detach-sig $(ARCHIVE)
 fi