feat: add caddy config

docker-compose.yml

@@ -79,6 +79,7 @@ services:
     command: ["sh", "-c", "bun install && bun run dev --host 0.0.0.0 --port 5173"]
     environment:
       API_PROXY_TARGET: http://api:8080
+      ALLOWED_HOSTS: ${FRONTEND_DEV_HOST:-}
     volumes:
       - ./frontend:/app
       - frontend_node_modules:/app/node_modules