minecraft: add battle server on port 25573 for kids PVP

Survival mode, seed 854721609616927000, PVP enabled.
30-min resource gather then battle.

minecraft/docker-compose.yaml

@@ -45,6 +45,25 @@ services:
     tty: true
     restart: unless-stopped
     mem_limit: 2g
+  battle:
+    image: itzg/minecraft-server:latest
+    container_name: minecraft-battle
+    ports:
+      - "25573:25565"
+    environment:
+      EULA: "true"
+      SEED: "854721609616927000"
+      SERVER_NAME: "Battle Royale"
+      MODE: "survival"
+      PVP: "true"
+      OPS: "Jimcognito"
+    volumes:
+      - /srv/minecraft-battle:/data
+    stdin_open: true
+    tty: true
+    restart: unless-stopped
+    mem_limit: 2g
+
   epic-bases:
     image: itzg/minecraft-server:latest
     container_name: minecraft-pvp0