Please Help (about rocker/rstudio)

Hi, I have just started using docker,
when I use

sudo docker run -d -p 8787:8787 rocker/rstudio

it always show me FATA[0001] Error response from daemon: Cannot start …: [8] System error: exec format error.
And, I use

sudo docker exec -ti rstudio bash

it shows container in not running.

How I solve these problem?
Can someone help me?