Defined in github.com/aws/aws-sdk-go/service/ecs/api.go
Registers a new task definition from the supplied family and containerDefinitions. Optionally, you can add data volumes to your containers with the volumes parameter. For more information about task definition parameters and defaults, see Amazon ECS Task Definitions (http://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_defintions.html) in the Amazon EC2 Container Service Developer Guide.
You can specify an IAM role for your task with the taskRoleArn parameter. When you specify an IAM role for a task, its containers can then use the latest versions of the AWS CLI or SDKs to make API requests to the AWS services that are specified in the IAM policy associated with the role. For more information, see IAM Roles for Tasks (http://docs.aws.amazon.com/AmazonECS/latest/developerguide/task-iam-roles.html) in the Amazon EC2 Container Service Developer Guide.
You can specify a Docker networking mode for the containers in your task definition with the networkMode parameter. The available network modes correspond to those described in Network settings (https://docs.docker.com/engine/reference/run/#/network-settings) in the Docker run reference.