fixes #7802, when api version 1.11 is `json.Marshal`ing the container st...

fixes #7802, when api version 1.11 is `json.Marshal`ing the container struct

Signed-off-by: Jessica Frazelle <jfrazelle@users.noreply.github.com>
This should be `api inspect` to avoid collision with cli. Or possibly you should use something like "container json", instead of "inspect"