nginx.conf

error_log /tmp/log debug;
# nginx proxy over the UI and API servers, to get around CORS for local
# development. For directive documentation, see
# http://nginx.org/en/docs/dirindex.html
# Required - just leave the defaults for now.
events {}
http {
  # These host names are available in a docker-compose environment via
  # docker linking.
  upstream ui {
    server ui:4400;
  }
  upstream api {
    server apise:8390;
  }
  server {
    listen 4400;
    # All API requests have a version prefix. Route everything else to
    # the UI server.
    location /api {
      proxy_pass http://api;
    }
    location / {
      proxy_pass http://ui;
      # These prevent websocket 400 errors. See
      # https://github.com/socketio/socket.io/issues/1942#issuecomment-82352072
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "Upgrade";
      proxy_set_header Host $host;
    }
  }
}