[feature request] support dns options when creating container through pouch cli

[mathspanda]

Support specifying options related with dns when creating container through pouch cli. Maybe only a little code in cli package.

[allencloud]

That is good. It is a good feature for PouchContainer. Could you help to implement this? @mathspanda
Thanks a lot. 🍺

[mathspanda]

Sure. I will work on it.