# stream.conf
stream {
    include stream.conf.d/10-upstream.conf;

    server {
        listen     8000;
        #TCP traffic will be forwarded to the specified server
        proxy_pass web1.nginx-proxy.example;
    }
}

docker run --detach \
    --name nginx-proxy \
    --publish 80:80 \
    --publish 8000:8000 \
    --volume /var/run/docker.sock:/tmp/docker.sock:ro \
    --volume ./stream.conf:/etc/nginx/toplevel.conf.d/stream.conf:ro \
    nginxproxy/nginx-proxy