feat: add gtnh server

config/services.nix

@@ -4,6 +4,14 @@ rec {
     domain = "git.nudelerde.de";
   };
 
+  gtnh = {
+    port = 25565;
+    serverPackUrl = "https://downloads.gtnewhorizons.com/ServerPacks/GT_New_Horizons_2.8.4_Server_Java_17-25.zip";
+    version = "1.7.10";
+    memory = "12G";
+    timezone = "Europe/Berlin";
+  };
+
   "metric-exporter" = {
     port = 9100;
     collectors = [

services/default.nix

@@ -5,5 +5,6 @@
     ./forgejo.nix
     ./node-exporter.nix
     ./prometheus.nix
+    ./minecraft.nix
   ];
 }

services/minecraft.nix

@@ -0,0 +1,49 @@
+{ lib, ... }:
+let
+  serv = import ../config/services.nix;
+  gtnh = serv.gtnh;
+  minecraftUid = 2000;
+  minecraftGid = 2000;
+  gtnhEnvironment = {
+    EULA = "TRUE";
+    TYPE = "FORGE";
+    VERSION = gtnh.version;
+    GENERIC_PACK = gtnh.serverPackUrl;
+    LOAD_ENV_FROM_GENERIC_PACK = "true";
+    REMOVE_OLD_MODS = "TRUE";
+    MEMORY = gtnh.memory;
+    USE_AIKAR_FLAGS = "true";
+    TZ = gtnh.timezone;
+    UID = toString minecraftUid;
+    GID = toString minecraftGid;
+  };
+in {
+  virtualisation.docker.enable = true;
+
+  users.groups.minecraft.gid = minecraftGid;
+
+  users.users.minecraft = {
+    isSystemUser = true;
+    group = "minecraft";
+    home = "/var/lib/minecraft";
+    createHome = true;
+    uid = minecraftUid;
+  };
+
+  networking.firewall.allowedTCPPorts = [ gtnh.port ];
+
+  virtualisation.oci-containers.containers.gtnh = {
+    image = "itzg/minecraft-server:java21";
+    autoStart = true;
+
+    ports = [
+      "${toString gtnh.port}:${toString gtnh.port}"
+    ];
+
+    volumes = [
+      "/var/lib/minecraft:/data"
+    ];
+
+    environment = gtnhEnvironment;
+  };
+}