diff --git a/keep-alive.sh b/keep-alive.sh
new file mode 100755
index 0000000..7fc06e8
--- /dev/null
+++ b/keep-alive.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+sleep_for=${KEEP_ALIVE_SECONDS:-86400}
+echo "Keeping container alive (interval ${sleep_for}s). Press Ctrl+C to stop."
+
+trap 'exit 0' TERM INT
+while true; do
+  sleep "$sleep_for" &
+  wait $!
+done