Switch to using systemd timer for container update

Signed-off-by: Tommy <contact@tommytran.io>

x86-QEMU-Docker.ign

@@ -251,6 +251,11 @@
         "enabled": false,
         "name": "docker-compose-updater.service"
       },
+      {
+        "contents": "[Unit]\nDescription=Run docker-compose-updater once a week, 15 minutes after OS update\n\n[Timer]\nOnCalendar=Fri 0:15\nPersistent=true\n\n[Install]\nWantedBy=timers.target\n",
+        "enabled": false,
+        "name": "docker-compose-updater.timer"
+      },
       {
         "enabled": true,
         "name": "docker.service"

x86-QEMU-Docker.yml

@@ -140,6 +140,18 @@ systemd:
 
         [Install]
         WantedBy=multi-user.target
+    - name: docker-compose-updater.timer
+      enabled: false
+      contents: |
+        [Unit]
+        Description=Run docker-compose-updater once a week, 15 minutes after OS update
+
+        [Timer]
+        OnCalendar=Fri 0:15
+        Persistent=true
+
+        [Install]
+        WantedBy=timers.target
     - name: docker.service
       enabled: true
     - name: fstrim.timer