Add cron job to prune old images

playbooks/roles/docker_compose/tasks/main.yaml

@@ -111,3 +111,11 @@
     minute: "0"
     hour: "5"
     job: "cd /ansible_docker_compose; docker compose pull && docker compose up -d"
+
+- name: Install automatic cleanup cron job
+  become: true
+  ansible.builtin.cron:
+    name: 'docker compose auto update'
+    minute: "23"
+    hour: "4"
+    job: "docker system prune -a -f"