Add Docker deployment config and production CORS

- Dockerfile with multi-stage build (builder + production)
- docker-compose.yml for EC2 deployment with SSH localhost
- Add status.eventifyplus.com to CORS origins

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,16 @@
+services:
+  server-monitor:
+    build: .
+    container_name: eventify-server-monitor
+    restart: unless-stopped
+    ports:
+      - "3002:3002"
+    environment:
+      - SSH_HOST=host.docker.internal
+      - SSH_USER=ubuntu
+      - SSH_KEY_PATH=/root/.ssh/id_rsa
+      - PORT=3002
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    volumes:
+      - /home/ubuntu/.ssh/id_rsa:/root/.ssh/id_rsa:ro