fix: use static export for both CF Pages and Docker

- Set output: 'export' in next.config.ts (creates /out directory)
- Replaced Node.js standalone Dockerfile with nginx serving static files
- Updated docker-compose.yml for nginx (port 80)
- Both CF Pages and Docker now use the same static build

docker-compose.yml

@@ -8,15 +8,11 @@ services:
     image: ghcr.io/retrozenith/tuxmate:latest
     container_name: tuxmate
     ports:
-      - "3000:3000"
-    environment:
-      - NODE_ENV=production
-      - PORT=3000
-      - NEXT_TELEMETRY_DISABLED=1
+      - "3000:80"
     restart: unless-stopped
     healthcheck:
-      test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://localhost:3000"]
+      test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://localhost:80"]
       interval: 30s
       timeout: 10s
       retries: 3
-      start_period: 40s
+      start_period: 10s