Sync photos before creating the gallery

Makefile

@@ -10,6 +10,10 @@ all: build-and-upload-all
 
 # Create the photo galleries and create the index and preview html pages.
 PHOTODIRS !=	find photos/* -maxdepth 0 -mindepth 0 -type d
+get-photos:
+	[ ! -d "photos" ] \
+		&& git clone sdk@home.codevoid.de:.photos.git photos \
+		|| cd photos && git pull
 photos: ${PHOTODIRS}
 	mkdir -p ${SITE}/photos
 	cd photos && sh ${SCRIPTS}/mkphotoindex.sh > index.html
@@ -20,7 +24,7 @@ photos: ${PHOTODIRS}
 	find photos -type f \( -name "*.html" \
 			    -o -name "*.meta" \
 			\) -exec install -D {} site/{} \;
-${PHOTODIRS}:
+${PHOTODIRS}: get-photos
 	cd "$@" && sh ${SCRIPTS}/mkphotos.sh > index.html
 
 # (manual step) - it takes some time to optimize all images and it's not really necessary.