Using https://github.com/vercel/next.js/tree/canary/examples/with-docker-multi-env as reference. The logs show the whole running dance and listening on http://localhost:3000. Docker Desktop says 3001:3000 as per the docker-compose.yml. When I connect to any made up port like localhost:3071, we get connection refused. When we connect to http://localhost:3001 we get an empty response. So it's connecting to docker, but it's not reaching the server.