Merge pull request #559 from wking/create-bail-for-unsupported-config

runtime.md: Require 'create' to fail if config.json asks for the impossible

runtime.md

@@ -84,9 +84,10 @@ This operation MUST return the state of a container as specified in the [State](
 `create <container-id> <path-to-bundle>`
 
 This operation MUST generate an error if it is not provided a path to the bundle and the container ID to associate with the container.
-If the ID provided is not unique across all containers within the scope of the runtime, or is not valid in any other way, the implementation MUST generate an error and a new container MUST not be created.
+If the ID provided is not unique across all containers within the scope of the runtime, or is not valid in any other way, the implementation MUST generate an error and a new container MUST NOT be created.
 Using the data in [`config.json`](config.md), this operation MUST create a new container.
 This means that all of the resources associated with the container MUST be created, however, the user-specified code MUST NOT be run at this time.
+If the runtime cannot create the container as specified in `config.md`, it MUST generate an error and a new container MUST NOT be created.
 
 Upon successful completion of this operation the `status` property of this container MUST be `created`.