diff --git a/Makefile b/Makefile
index bbb7aa1..aed93b0 100755
--- a/Makefile
+++ b/Makefile
@@ -234,3 +234,5 @@ docker-push:
 docker-pull:
 	docker pull glenux/teaching-boilerplate:latest
 
+shell:
+	$(SHELL) -c "exec $${SHELL}"