diff --git a/ansible/roles/docker/tasks/setup-docker.yml b/ansible/roles/docker/tasks/setup-docker.yml
index f88c01b..61ccaaa 100644
--- a/ansible/roles/docker/tasks/setup-docker.yml
+++ b/ansible/roles/docker/tasks/setup-docker.yml
@@ -29,3 +29,9 @@
     uid: "{{ docker_user.id }}"
     group: "{{ docker_user.name }}"
     create_home: false
+
+- name: Clean up docker containers
+  cron:
+    name: clean up docker containers
+    special_time: weekly
+    job: "docker system prune"