give ansible docker comp. cron jobs unique names to not overw. each oth.

Give them unique names, so the latter doesn't overwrite the former.
Also make the task names nicer.

roles/docker_compose/tasks/main.yaml

@@ -104,18 +104,18 @@
     name: anacron
     state: present
 
-- name: Install automatic update cron job
+- name: ensure automatic update cron job is present
   become: true
   ansible.builtin.cron:
-    name: 'docker compose auto update'
+    name: 'ansible docker compose auto update'
     minute: "0"
     hour: "5"
     job: "cd /ansible_docker_compose; docker compose pull && docker compose up -d"
 
-- name: Install automatic cleanup cron job
+- name: ensure automatic cleanup cron job is present
   become: true
   ansible.builtin.cron:
-    name: 'docker compose auto update'
+    name: 'ansible docker compose auto cleanup'
     minute: "23"
     hour: "4"
     job: "docker system prune -a -f"