Support new docker sub commands

[StefanScherer]

The Docker client now has a new structure with sub commands.

For example:

docker container --help
docker container run ...

docker image --help
docker image ls

How can posh-docker be enhanced to support tab completion for these sub commands as well?

[samneirinck]

Right, I'll take a look this week to see how we can do this.

[StefanScherer]

Thank you.

[samneirinck]

Haven't been able to take a look at this yet, but I didn't forget it :)

[onestay]

Any new info on this?

[samneirinck]

Thanks for the nod, I'm combining this with adding tests so I don't break compatibility with older versions.

[onestay]

Great, thanks!