actually use the image

that was so silly

Justfile

@@ -4,4 +4,5 @@ image TARGET='PACKER':
 build:
 	podman run --interactive --tty --rm --name lisgd-builder \
 		--volume ./:/work --workdir /work \
-		make lisgd:builder
+		lisgd:builder \
+		make lisgd