fix vikunja, mastodon and bit of refactoring

configs/containers/netcup_pve/vikunja_container.nix

@@ -0,0 +1,24 @@
+{ lib, pkgs, config, ... }:
+{
+  deployment = {
+    targetHost = "10.0.0.5";
+    targetPort = 22;
+    targetUser = "root";
+    tags = [ "netcup_pve" ];
+  };
+  networking = {
+    hostName = "vikunja";
+    interfaces.eth0 = {
+      ipAddress = "10.0.0.5";
+      prefixLength = 32;
+    };
+    defaultGateway = {
+      address = "10.0.0.254";
+      interface = "eth0";
+    };
+  };
+  imports = [
+    ../../container_config.nix
+    ../../services/vikunja.nix
+  ];
+}