CloudformationECSService.yml

ECSService:
  Type: AWS::ECS::Service
  DependsOn: LoadBalancerListener
  Properties:
    ServiceName: !Join ['-', [!Ref Stage, !Ref 'AWS::AccountId', 'ECSService']]
    Cluster: !Ref Cluster
    TaskDefinition: !Ref TaskDefinition
    DesiredCount: 2
    LaunchType: FARGATE
    NetworkConfiguration: 
      AwsvpcConfiguration:
        AssignPublicIp: ENABLED
        Subnets:
          - !Ref SubnetA
          - !Ref SubnetB
        SecurityGroups:
          - !Ref ContainerSecurityGroup
    LoadBalancers:
      - ContainerName: !Join ['-', [!Ref Stage, !Ref 'AWS::AccountId', 'Container']]
        ContainerPort: !Ref ContainerPort
        TargetGroupArn: !Ref TargetGroup