Add --pull=always and remove --no-cache from image build options

update-harbor-image.sh

@@ -28,7 +28,7 @@ fi
 echo "Will build using $BUILDER"
 
 echo "Building $IMAGE_TAG"
-$BUILDER build --format docker --no-cache -t $IMAGE_TAG .
+$BUILDER build --format docker --pull=always -t $IMAGE_TAG .
 
 echo "Pushing $IMAGE_TAG"
 $BUILDER push $IMAGE_TAG