Add forge minecraft service

configuration/services/minecraft.nix

@@ -0,0 +1,94 @@
+{ config, pkgs, ... }:
+
+let
+  minecraft-server-args = [
+    "-Xms2G"
+    "-Xmx2G"
+    "-Dsun.rmi.dgc.server.gcInterval=2157583646"
+    "-XX:+UseG1GC"
+    "-XX:+ParallelRefProcEnabled"
+    "-XX:MaxGCPauseMillis=200"
+    "-XX:+UnlockExperimentalVMOptions"
+    "-XX:+DisableExplicitGC"
+    "-XX:+AlwaysPreTouch"
+    "-XX:G1NewSizePercent=30"
+    "-XX:G1MaxNewSizePercent=40"
+    "-XX:G1HeapRegionSize=8M"
+    "-XX:G1ReservePercent=20"
+    "-XX:G1HeapWastePercent=5"
+    "-XX:G1MixedGCCountTarget=4"
+    "-XX:InitiatingHeapOccupancyPercent=15"
+    "-XX:G1MixedGCLiveThresholdPercent=90"
+    "-XX:G1RSetUpdatingPauseTimePercent=5"
+    "-XX:SurvivorRatio=32"
+    "-XX:+PerfDisableSharedMem"
+    "-XX:MaxTenuringThreshold=1"
+  ];
+  ops = pkgs.writeText "ops.json" (builtins.toJSON [{
+    uuid = "140d177a-966f-41b8-a4c0-e305babd291b";
+    name = "TLATER";
+    level = 4;
+    bypassesPlayerLimit = true;
+  }]);
+  whitelist = pkgs.writeText "whitelist.json" (builtins.toJSON [
+    {
+      uuid = "59cd1648-14a4-4bcf-8f5a-2e1bde678f2c";
+      name = "romino25";
+    }
+    {
+      uuid = "0ab6e3d1-544a-47e7-8538-2e6c248e49a4";
+      name = "lasi25";
+    }
+    {
+      uuid = "01c9e737-fc9d-4d55-b8c2-610ca80eb4be";
+      name = "Nampeyo25";
+    }
+    {
+      uuid = "140d177a-966f-41b8-a4c0-e305babd291b";
+      name = "tlater";
+    }
+  ]);
+  eula = pkgs.writeText "eula.txt" "eula=true";
+
+in {
+  nixpkgs.config.allowUnfreePredicate = pkg:
+    builtins.elem (pkgs.lib.getName pkg) [ "forge-server" ];
+
+  virtualisation.oci-containers.containers.minecraft-voor-kia =
+    let properties = ./configs/minecraft/voor-kia/server.properties;
+    in {
+      image = "tlaternet/minecraft-voor-kia";
+
+      imageFile = pkgs.dockerTools.buildImage {
+        name = "tlaternet/minecraft-voor-kia";
+        tag = "latest";
+        contents = [
+          (pkgs.local.forge-server.override {
+            jre_headless = pkgs.jdk11_headless;
+          })
+        ];
+
+        config = let
+          # Use the upstream minecraft uid
+          uid = toString config.ids.uids.minecraft;
+          gid = toString config.users.groups.nogroup.gid;
+        in {
+          Cmd = [ "forge-server" ] ++ minecraft-server-args;
+          WorkingDir = "/var/lib/minecraft";
+          Volumes = { "/var/lib/minecraft" = { }; };
+          ExposedPorts = { "25565" = { }; };
+          User = "${uid}:${gid}";
+        };
+      };
+
+      autoStart = false;
+      ports = [ "25565:25565" ];
+      volumes = [
+        "minecraft:/var/lib/minecraft"
+        "${properties}:/var/lib/minecraft/server.properties:ro"
+        "${ops}:/var/lib/minecraft/ops.json:ro"
+        "${whitelist}:/var/lib/minecraft/whitelist.json:ro"
+        "${eula}:/var/lib/minecraft/eula.txt:ro"
+      ];
+    };
+}