https://blog.canopas.com/complete-guide-to-deploying-ssr-vite-apps-on-aws-with-automation-27676113d6ac - Load balancer listeners

template-lb-listeners.yml

AWSTemplateFormatVersion: 2010-09-09
Description: An ECS, ECR, ALB and cloudfront stack
    
Resources:
  # http (port:80) listener redirects to https
  HTTPListener:
    Type: "AWS::ElasticLoadBalancingV2::Listener"
    Properties:
      DefaultActions:
        - 
          Order: 1
          RedirectConfig: 
            Protocol: "HTTPS"
            Port: "443"
            StatusCode: "HTTP_301" #redirect from http to https
          Type: "redirect"
      LoadBalancerArn: !Ref ApplicationLoadBalancer  #load balancer reference
      Port: 80
      Protocol: HTTP
  
  # https (port:443) listener with ssl certificate
  HTTPSListener: 
    Type: "AWS::ElasticLoadBalancingV2::Listener"
    Properties:
      LoadBalancerArn: !Ref ApplicationLoadBalancer #load balancer reference
      Port: 443
      Protocol: "HTTPS"
      SslPolicy: "ELBSecurityPolicy-TLS-1-2-Ext-2018-06"
      Certificates: 
        - CertificateArn: < CERTIFICATE-ARN >  #created using AWS cerificate manager
      DefaultActions: 
        - 
          Order: 1
          TargetGroupArn: !Ref TargetGroup #target group reference
          Type: "forward"