diff --git a/Makefile b/Makefile
index 8c71b21..743b21d 100644
--- a/Makefile
+++ b/Makefile
@@ -24,6 +24,12 @@ test: test-config test-post test-ui
 build:
 	docker compose build
 
+build-assets:
+	docker run --rm \
+	  -v $(PWD)/user/themes/intotheeast:/app \
+	  -w /app node:20-alpine \
+	  sh -c "npm install && npm run build"
+
 start:
 	docker compose up -d