Saiku-4.0.0-beta1 502 Bad Gateway

[KF]

Hi

I want to run Saiku by Docker image

docker run -p 80:80
 meteorite/saikuserver:latest

but I get 502 Bad Gateway error. 

I entered licence (License created successfully) and then I use Administrator or Bussines User login but it finishes by 502 Error. The same as https://try.meteorite.bi/

Did I anything wrong? 

Thanks

Katka