Example project never starts

[hobbs]

I tried going through the example Go tutorial:
https://github.com/coldbrewcloud/tutorial-echo

I installed via go get and go install, so using the master branch on the CLI.

$ coldbrew status
Application
  Name: echo
  Cluster: tutorial
AWS
  Region: us-west-2
  VPC: vpc-69db9410
  Subnets: subnet-0b0ed840 subnet-05df687c subnet-87e473dd
ECS
  ECS Cluster: coldbrew-tutorial
  ECS Service: echo
  ECS Task Definition: echo:1
  Tasks (current/desired/pending): 0/2/0
Container Definition
  Name: echo
  Image: 272340174925.dkr.ecr.us-west-2.amazonaws.com/coldbrew/echo:latest
  CPU: 0.10
  Memory: 100m
  Port Mapping (protocol:container:host): tcp:8888:0
Load Balancer
  Container Port: 8888
  ELB Target Group: echo-elb-tg
  ELB Load Balancer: echo-elb
    Scheme: internet-facing
    State: active 
    Endpoint: http://echo-elb-216009805.us-west-2.elb.amazonaws.com:80

The containers are never launched on the cluster. In the ECS control panel it gives a warning that the ecs agent is out of date (1.14.4 vs 1.17.3), and links to https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs-agent-update.html