diff --git a/.cursorius/cursorius-build.py b/.cursorius/cursorius-build.py
index 2df4fcb..bb98d5f 100644
--- a/.cursorius/cursorius-build.py
+++ b/.cursorius/cursorius-build.py
@@ -1,6 +1,6 @@
 import cursorius.executors.docker as docker
 
 print("hello, world from python (#1)")
-d = docker.DockerBuilder.from_dockerfile("builder", "Dockerfile")
-print(d.run("/main"))
+with docker.DockerBuilder.from_dockerfile("builder", "Dockerfile") as d:
+    print(d.run("/main"))
 print("hello, world from python (#2)")