nginx-proxy-manager/backend/templates/_location.conf

  location {{ path }} {
    set              $targetUri {{ forward_scheme }}://{{ forward_host }}:{{ forward_port }}{{ forward_path }};
    {% unless path contains "~" and path contains "(" and path contains ")" %}
    if ($request_uri != /){
      set            $targetUri $targetUri$request_uri;
    }
    {% endunless %}
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-Scheme $scheme;
    proxy_set_header X-Forwarded-Proto  $scheme;
    proxy_set_header X-Forwarded-For    $remote_addr;
    proxy_set_header X-Real-IP		$remote_addr;
    proxy_pass       $targetUri;

    {% if access_list_id > 0 %}
    {% if access_list.items.length > 0 %}
    # Authorization
    auth_basic            "Authorization required";
    auth_basic_user_file  /data/access/{{ access_list_id }};
 
    {{ access_list.passauth }}
    {% endif %}
 
    # Access Rules
    {% for client in access_list.clients %}
    {{- client.rule -}};
    {% endfor %}deny all;
 
    # Access checks must...
    {% if access_list.satisfy %}
    {{ access_list.satisfy }};
    {% endif %}
 
    {% endif %}

    {% include "_assets.conf" %}
    {% include "_exploits.conf" %}

    {% include "_forced_ssl.conf" %}
    {% include "_hsts.conf" %}

    {% if allow_websocket_upgrade == 1 or allow_websocket_upgrade == true %}
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $http_connection;
    proxy_http_version 1.1;
    {% endif %}


    {{ advanced_config }}
  }