docker: Add old image/container cleanup service

diff --git a/cookbooks/docker/recipes/default.rb b/cookbooks/docker/recipes/default.rb
index 890c1c21fa324df1dcfd0cd7ae3933c5bfea5771..3d7fd2104ebf8bcb1661b12ebaeb43af31591f5e 100644 (file)
--- a/cookbooks/docker/recipes/default.rb
+++ b/cookbooks/docker/recipes/default.rb
@@ -42,3 +42,21 @@ service "docker" do
   action [:enable, :start]
   subscribes :restart, "template[/etc/docker/daemon.json]"
 end
+
+systemd_service "docker-system-prune" do
+  description "Cleanup up unused docker images and containers"
+  after ["docker.service"]
+  wants ["docker.service"]
+  user "root"
+  exec_start "/usr/bin/docker system prune --all --force"
+  sandbox :enable_network => true
+  memory_deny_write_execute false
+  restrict_address_families "AF_UNIX"
+end
+
+systemd_timer "docker-system-prune" do
+  description "Cleanup up unused docker images and containers"
+  on_boot_sec "2h"
+  on_unit_active_sec "7d"
+  randomized_delay_sec "4h"
+end