docs: fixed docker run command

[niklas-dahl]

I guess this was a typo, running the command in the old form gives the following:

~$ docker container run --name new-ng2-app -it -v $(pwd):/opt/app -w /opt/app -p 4200:4200 teracy/angular-cli /bin/bash
docker: 'container' is not a docker command.
See 'docker --help'.

[hoatle]

@niklas-dahl docker container run is a new command from docker 1.13, please update your Docker, this is not typo https://blog.docker.com/2017/01/whats-new-in-docker-1-13/

[niklas-dahl]

oh okay, thanks for the information!