Hi, when I use the latest version I get an error when calling a Lambda. 

I get this error:
Lambda process returned error status code: 1. Output:
awssvc           | 2019-05-10T22:23:19.822966331Z Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.29/containers/create: dial unix /var/run/docker.sock: connect: permission denied
awssvc           | 2019-05-10T22:23:19.822969899Z must specify at least one container source

I'am using the Lambda in a docker. 

You can find my setup here: https://github.com/blaart/stream-my-changes
After forcing to use the 0.9.1 version all works fine again.  

def __init__(self, port, forward_url=None, ssl=False, host=None, update_listener=None, quiet=False, params={}):
        FuncThread.__init__(self, self.run_cmd, params, quiet=quiet)
        self.httpd = None
        self.port = port
        self.ssl = ssl
        self.quiet = quiet
        if forward_url:
            if '://' not in forward_url:
                forward_url = 'http://%s' % forward_url
            forward_url = forward_url.rstrip('/')
        self.forward_url = forward_url
        self.update_listener = update_listener
        self.server_stopped = False
        
        self.protocol_version = params.get('protocol_version') or 'HTTP/1.1'
        self.listen_host = host or ''
    def run_cmd(self, params):
        try:
            self.httpd = ThreadedHTTPServer((self.listen_host, self.port), GenericProxyHandler)
            if self.ssl:
                
                combined_file, cert_file_name, key_file_name = GenericProxy.create_ssl_cert()
                self.httpd.socket = ssl.wrap_socket(self.httpd.socket,
                    server_side=True, certfile=combined_file)
            self.httpd.my_object = self
            self.httpd.serve_forever()
        except Exception as e:
            if not self.quiet or not self.server_stopped:
                LOGGER.error('Exception running proxy on port %s: %s %s' % (self.port, e, traceback.format_exc()))
    def stop(self, quiet=False):