From 979b6bc1a5b7efede405762be4cebcd4afc14d8a Mon Sep 17 00:00:00 2001
From: steffen <steffen@skui.io>
Date: Sun, 25 Jan 2026 02:23:58 +0000
Subject: [PATCH] Add cron note

---
 .cron | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 .cron

diff --git a/.cron b/.cron
new file mode 100644
index 0000000..20d8cfd
--- /dev/null
+++ b/.cron
@@ -0,0 +1,17 @@
+Docker cleanup cron (host-side)
+
+Purpose:
+- Daily prune of unused images/containers/build cache for the runner host.
+- Keeps bind-mounted data safe (no named volumes removed).
+
+Schedule:
+- 04:00 daily
+
+Cron entry (root):
+0 4 * * * root /usr/bin/docker image prune -af --filter "until=24h" && /usr/bin/docker container prune -f && /usr/bin/docker builder prune -af --filter "until=24h"
+
+
+
+
+printf '%s\n' '0 4 * * * root /usr/bin/docker image prune -af --filter "until=24h" && /usr/bin/docker container prune -f && /usr/bin/docker builder prune -af --filter "until=24h"' | sudo tee /etc/cron.d/docker-prune
+cat /etc/cron.d/docker-prune