added mpd-index container

hosts/containers/mpd-index/configuration.nix

@@ -0,0 +1,45 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+{ config, pkgs, lib, ... }:
+
+{
+  imports =
+    [ ../../../lib/lxc-container.nix
+    ../../../lib/shared.nix
+    ../../../lib/admins.nix
+  ];
+
+  fileSystems."/mnt/music" = { fsType = "nfs"; device = "172.22.99.10:/mnt/zroot/storage/rpool/Music"; };
+
+  networking.hostName = "mpd-index";
+
+  services.mpd = {
+    enable = true;
+    user = "mpd";
+    group = "audio";
+    network = {
+      listenAddress = "any";
+      port = 6600;
+    };
+    musicDirectory  = "/mnt/music";
+    extraConfig = ''
+      default_permissions "read,add,control,admin"
+
+      input {
+        plugin "curl"
+      }
+
+      audio_output {
+        type "null"
+        name "My Null Output"
+      }
+
+      filesystem_charset "UTF-8"
+    '';
+  };
+
+  system.stateVersion = "18.09"; # Did you read the comment?
+
+}