I am using Docker for Windows Community Edge edition. I am a newbie and I am trying to follow the Getting Started tutorial for Docker for Windows. I have installed it on Wndows 10 without apparent problems. One of the commands in the tutorial is
docker run -it ubuntu bash
which should start a Ubuntu instance running the bash shell. How do I interact with this copy of bash? I have been completely unable to find a way. Also I have been unable to find any documentation on the -it option to run.