add ansible script to perform backup

Makefile

@@ -40,4 +40,7 @@ seafile:
 jitsi:
 	ansible-playbook playbooks/jitsi.yml -i inventory/hosts.yml --ask-vault-pass
 
+backup:
+	ansible-playbook playbooks/backup.yml -i inventory/hosts.yml
+
 .PHONY: run

playbooks/backup.yml

@@ -0,0 +1,7 @@
+- name: Create backup
+  hosts: homeserver
+  
+  tasks:
+    - name: Create backup
+      command:
+        cmd: systemctl start backup.service