Add docker-compose + deploy.sh (Coolify replacement)

Run on mewtwo: bound 0.0.0.0:8081 -> nginx :80.
Rebuilds site from source on every 'deploy.sh up' so new grades
flow through without Coolify. Point Netbird at http://<host>:8081.

Co-Authored-By: Claude <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,13 @@
+services:
+  benchmark:
+    # Builds from the repo's Dockerfile:
+    #   stage 1 (python) runs generate_dashboard.py from data/benchmark_history.json
+    #   stage 2 (nginx) serves dashboard.html + pages/ as static
+    build: .
+    image: llm-benchmark:latest
+    container_name: llm-benchmark
+    restart: unless-stopped
+    ports:
+      - "0.0.0.0:8081:80"   # bind all interfaces:8081 -> container :80
+    # Re-tag the image so `docker compose up` after a code change rebuilds it.
+    # (compose detects Dockerfile/context changes and rebuilds automatically.)