How to get from Sheremetyevo Airport to the Moscow Port for a river cruise
 

We are flying into Sheremetyevo on Aeroflot and need to get to the Moscow Port to board on a Viking River Cruise.

1) If one were to take a taxi, how long of a taxi ride and about how much should it cost?
2) Is there public transportation that we could take? We will not have much luggage with us.