Filter tasks returned by introspection API by short container ID

[matthurne]

It'd be convenient to be able to provide a short container ID when using the dockerid query param with the /tasks endpoint of the agent introspection API. Currently, it seems only full container IDs are supported.

When accessing the introspection API from within a container to get information about that container, we are hitting the /tasks endpoint and finding the relevant task where the DockerId starts with the value of the container's HOSTNAME. The HOSTNAME is the short container ID. If we could provide the value of the HOSTNAME as the dockerid we wouldn't need to sift through all of the tasks running on the container instance.

[samuelkarp]

Released in v1.14.2.

[matthurne]

@samuelkarp Do you know if there's an updated Amazon ECS-Optimized AMI available that includes agent version v1.14.2 yet? Is it in amzn-ami-2016.09.g-amazon-ecs-optimized, which is the latest according to http://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-optimized_AMI_launch_latest.html?

[vsiddharth]

@mhurne We do have an updated AMI with agent version v1.14.2 but we discovered a deadlock #833 which was addressed with #836 and we plan to publish new AMIs as soon as possible.