Update Makefile to remove dist before generate another one

Makefile

@@ -55,6 +55,7 @@ report:
 	xdg-open var/coverage/index.html
 
 dist:
+	sudo rm -rf ./dist
 	@docker build -t anis-node conf-dev && docker run --init -it --rm --user $(UID):$(GID) \
 	-v $(CURDIR):/project \
 	-w /project anis-node ng build --prod