Docker: prune images every night

playbook-docker.yml

@@ -31,3 +31,10 @@
       community.docker.docker_network:
         name: "monitoring_network"
         driver: "bridge"
+
+    - name: "Schedule docker image prune"
+      ansible.builtin.cron:
+        name: "docker image prune"
+        minute: "0"
+        hour: "3"
+        job: "/usr/bin/docker image prune -af"