roles/docker: convert cron.daily job to cron.d

Doesn't seem to be executing in cron.daily...

Signed-off-by: John Helmert III <[email protected]>

roles/docker/files/docker-system-prune

@@ -1,3 +1 @@
-#!/usr/bin/env bash
-
-docker system prune -f 2>&1 >/dev/null || echo "pruning failed"
+0 0 * * 1 root docker system prune -f 2>&1 >/dev/null || echo "pruning failed"

roles/docker/tasks/main.yml

@@ -6,14 +6,19 @@
 - name: Add homeassistant
   ansible.builtin.include_tasks: homeassistant.yml
   when: homeassistant
+- name: Remove old cronjob
+  when: mervin or homeassistant
+  ansible.builtin.file:
+    path: /etc/cron.daily/docker-system-prune
+    state: absent
 - name: Add cron job to prune Docker data
   # TODO: this is hacky, should put the above in their own roles (and
   # specify dependencies on traefik appropriately) then use this
   # docker role to do generate configuration like this:
   when: mervin or homeassistant
   ansible.builtin.copy:
     src: docker-system-prune
-    dest: /etc/cron.daily/docker-system-prune
-    mode: "0755"
+    dest: /etc/cron.d/docker-system-prune
+    mode: "0644"
     owner: root
     group: root