What's the target group port for, when using Application Load Balancer + EC2 Container Service

Question

I\'m trying to setup an ALB which listens on port 443, load balancing to ECS Docker containers on random ports, lets say I have 2 container instances of the same task definition

Answer 1

Turns out, when combined with ECS, the target group's port doesn't mean anything. You don't need to listen on that port.