gistfile1.txt

upstream chat_web {
    server 127.0.0.1:8080;
}

map $http_upgrade $connection_upgrade {
  default upgrade;
  '' close;
}

server{
    listen 80;
    server_name chat-prod.test;
    location / {
        try_files $uri @proxy;
    }

    location @proxy {
        include proxy_params;
        proxy_redirect off;
        proxy_pass http://chat_web;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header Host $host;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }
}

Nginx conf for Phoenix, no ssl and no gzip