Update container name (#51)
Update container name (#51)

Old image was removed so visualizer cant start due to missing image.

Check https://hub.docker.com/r/manomarks/visualizer/ for author notes regarding image move
play-with-docker/play-with-docker.github.io,ManoMarks/play-with-docker.github.io,play-with-docker/play-with-docker.github.io,ManoMarks/play-with-docker.github.io