Initial commit: minecraft server setup

Tracks docker-compose config, server scripts, and server properties.
Runtime data (world, libraries, versions, logs, jar), credentials, and
backup snapshots are gitignored.

docker-compose.yml

@@ -0,0 +1,17 @@
+services:
+  minecraft:
+    image: itzg/minecraft-server:latest
+    container_name: minecraft
+    ports:
+      - "25565:25565"
+    environment:
+      EULA: "TRUE"
+      ONLINE_MODE: "FALSE"
+      TYPE: "VANILLA"
+      VERSION: "26.1.2"
+      MEMORY: "4G"
+    volumes:
+      - ./data:/data
+    restart: unless-stopped
+    stdin_open: true
+    tty: true