Running Snibox on AWS ECS

[mmillican]

I'm trying to run Snibox (Docker) version on AWS Elastic Container Service. I have the container host built and its working as far as I can tell. However, when I try to deploy Snibox to it, the frontend keeps failing with the error:

nginx: [emerg] host not found in upstream "backend:3000" in /etc/nginx/conf.d/default.conf:17

Here is my ecs-params.yml file which "complements" the docker-compose.yml file:

version: 1
task_definition:
  task_role_arn: ecs-cluster-dev-ECSRole-XXXXXX
  task_execution_role: ecs-cluster-dev-ECSRole-XXXXXX
  services:
    frontend:
      cpu_shares: 5
      mem_limit: 256
      volumesFrom:
        - ContainerName: backend
          Readonly: false
    
    backend:
      cpu_shares: 5
      mem_limit: 512

    database:
      cpu_shares: 10
      mem_limit: 512
  
  docker_volumes:
    - name: 'pg-data'
      scope: 'shared'
      autoprovision: true
    - name: 'static-files'
      scope: 'shared'
      autoprovision: true
run_params:
  network_configuration:
    awsvpc_configuration: 
      subnets:
        - subnet-XXXXXX
        - subnet-XXXXXX

Note that the dependsOn option is not valid in ECS, so its essentially ignored. I read that you can use volumesFrom instead, but that doesn't seem to change anything.