huginn_ynh/conf/nginx.conf

#sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;
location __PATH__/ {

  # Path to source
  alias __INSTALL_DIR__/public/;

  ## @huginn is a named location for the upstream fallback, see below.
  try_files $uri $uri/index.html $uri.html @huginn;

  # Include SSOWAT user panel.
  #include conf.d/yunohost_panel.conf.inc;
}

location @huginn {
  ## If you use HTTPS make sure you disable gzip compression
  ## to be safe against BREACH attack.
  gzip off;

  proxy_read_timeout      300;
  proxy_connect_timeout   300;
  proxy_redirect          off;

  proxy_set_header    Host                $host;
  proxy_set_header    X-Real-IP           $remote_addr;
  proxy_set_header    X-Forwarded-Ssl     on;
  proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
  proxy_set_header    X-Forwarded-Proto   $scheme;
  proxy_set_header    X-Frame-Options     SAMEORIGIN;

  proxy_pass http://unix:/__INSTALL_DIR__/tmp/sockets/unicorn.socket;
}