Nginx config for Phoenix Channels

nginx.conf

upstream phoenix {
  server phoenix:8003;
}

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

server {
  listen 80;
  server_name _;
  location / {
    proxy_pass http://phoenix;
    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;
  }
}