cannot connect to a tile38 server with docker

[Ahmed-Nasser]

`
private $_socket;

public function __construct($address, $port)
{
    $this->_socket = stream_socket_client($address.':'.$port);
}

public function __call($method, array $args)
{
    array_unshift($args, $method);

    $cmd = '*' . count($args) . "\r\n";

    foreach ($args as $item) {
        $cmd .= '$' . strlen($item) . "\r\n" . $item . "\r\n";
    }
    fwrite($this->_socket, $cmd);

    return $this->_parseResponse();
}

private function _parseResponse()
{
    $line = fgets($this->_socket);

    list($type, $result) = array($line[0], substr($line, 1, strlen($line) - 3));

    if ($type == '-') // error message
    {
        throw new TinyRedisClient_Exception($result);
    } elseif ($type == '$') // bulk reply
    {
        if ($result == -1)
            $result = null;
        else {
            $line = fread($this->_socket, $result + 2);
            $result = substr($line, 0, strlen($line) - 2);
        }
    } elseif ($type == '*') // multi-bulk reply
    {
        $count = ( int ) $result;
        for ($i = 0, $result = array(); $i < $count; $i++) {
            $result[] = $this->_parseResponse();
        }
    }
    return $result;
}

`
the problem here is that I don't know where the fwrite() function writes my file does it create an actual file or does it write to the stream resource I don't know, when I try this on my local machine it works fine and the command sent to my database but after I moved to docker this line $line = fgets($this->_socket); returns a false which means there is no data has been written or some error happened, I am expecting the written command to the stream