feat: adds borg, timers and systemd service support

config/ansible/templates/borg-backup.service.j2

@@ -0,0 +1,31 @@
+[Unit]
+Description=Borg Backup Service
+After=network.target
+
+[Service]
+Type=oneshot
+User=root
+Group=root
+ExecStart={{ borg_config_dir }}/backup.sh
+StandardOutput=journal
+StandardError=journal
+Environment="BORG_PASSPHRASE={{ borg_passphrase }}"
+Environment="BORG_REPO={{ borg_repo_dir }}"
+Environment="BORG_CACHE_DIR={{ borg_config_dir }}/cache"
+Environment="BORG_CONFIG_DIR={{ borg_config_dir }}/config"
+Environment="BORG_SECURITY_DIR={{ borg_config_dir }}/security"
+Environment="BORG_KEYS_DIR={{ borg_config_dir }}/keys"
+
+# Security settings
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ReadWritePaths=/mnt/services /mnt/object_storage /var/log {{ borg_config_dir }}
+ProtectHome=read-only
+ProtectControlGroups=true
+RestrictRealtime=true
+SystemCallFilter=@system-service
+SystemCallErrorNumber=EPERM
+
+[Install]
+WantedBy=multi-user.target