feat: add dns container with AGH + unbound

lxc/dns/logs-unbound.alloy.nix

@@ -0,0 +1,44 @@
+{ ip, domainname, ... }:
+{
+  out = ''
+        loki.relabel "unbd_journal" {
+          forward_to = []
+          rule {
+            source_labels = ["__journal__priority_keyword"]
+            target_label = "level"
+          }
+          rule {
+            source_labels = ["__journal__SYSLOG_IDENTIFIER"]
+            target_label = "app"
+          }
+        }
+        loki.source.journal "unbd_journal_scrape" {
+          forward_to = [loki.process.unbd_router.receiver]
+          matches = "_SYSTEMD_UNIT=unbound.service"
+          relabel_rules = loki.relabel.unbd_journal.rules
+          labels = {
+            service = "unbound",
+            host = "${domainname}",
+            host_ip = "${ip}",
+          }
+        }
+
+    loki.process "unbound_router" {
+      stage.pattern {
+        pattern = "[<_>] <level>: <message>"
+      }
+
+      stage.labels {
+        values = {
+          level = "level",
+        }
+      }
+      
+      stage.output {
+        source = "message"
+      }
+
+      forward_to = [loki.write.grafana_loki.receiver]
+    }
+  '';
+}