add bluemap support to minecraft server config

common/fragments/minecraft-server.nix

@@ -15,12 +15,12 @@
         MOTD = "Minecraft with Fabric on CRIMESPOON via Docker";
       };
       autoStart = true;
-      ports = ["25565:25565"];
+      ports = ["25565:25565" "8100:8100"];
       volumes = ["/var/games/minecraft:/data"];
     };
   };
 
-  environment.systemPackages = with pkgs; [ mcrcon ];
-  networking.firewall.allowedTCPPorts = [ 25565 ];
+  # Port 8100 is for BlueMap.
+  networking.firewall.allowedTCPPorts = [ 25565 8100 ];
   networking.firewall.allowedUDPPorts = [ 25565 ];
 }