Hi, I am trying to run my TypeScript backend on ECS + Fargete. I have created a web target group and an alb using the following code:

const webTargetGroup = new aws.lb.TargetGroup(`web-target-${stack}`, {
  port: 3000,
  protocol: "HTTP",
  vpcId: vpc.vpcId,
  targetType: "ip",
});

const loadbalancer = new awsx.lb.ApplicationLoadBalancer(
  `loadbalancer-${stack}`,
  {
    listeners: [
      {
        port: 3000,
        protocol: "HTTP",
        defaultActions: [
          {
            type: "redirect",
            redirect: {
              protocol: "HTTPS",
              port: "443",
              statusCode: "HTTP_301",
            },
          },
        ],
        tags: {
          Environment: stack,
        },
      },
      {
        port: 443,
        certificateArn: apiCert.arn,
        protocol: "HTTPS",
        sslPolicy: "ELBSecurityPolicy-2016-08",
        defaultActions: [
          {
            type: "forward",
            forward: {
              targetGroups: [
                {
                  arn: webTargetGroup.arn,
                },
              ],
            },
          },
        ],
        tags: {
          Environment: stack,
        },
      },
    ],
    tags: {
      Environment: stack,
    },
  }
);

I am also creating a Farget service using the code below

const webTargetGroup = stackRef.getOutput('webApplicationTargetGroup');

const image = new awsx.ecr.Image(`image-${stack}`, {
  repositoryUrl: repoUrl,
  path: '../',
});

new awsx.ecs.FargateService(`service-${stack}`, {
  cluster: clusterArn,
  assignPublicIp: true,
  taskDefinitionArgs: {
    container: {
      image: image.imageUri,
      cpu: cpu,
      memory: memory,
      essential: true,
      portMappings: [
        {
          containerPort: containerPort,
          targetGroup: webTargetGroup,
        },
      ],
    },
  },
});

I am getting a 503 error after deployment. I believe its due to some port mapping configuration that I have excluded or entered incorrectly. My backend is running on port 3000. Any help is appreciated