how to properly map ports on ecs service - amazon-ecs

Question

so im having a fair bit of trouble because a cannot figure how ports should be configure in my security groups and my load balancer i was using an example in which the frontend is on port 80 but the application that i need to run needs to be on port 3000 son how would i edit this files to run on port 3000 instead of 80
#Internal ALB configurations
internal_alb_config = {
name = "Internal-Alb"
listeners = {
"HTTP" = {
listener_port = 80
listener_protocol = "HTTP"
}
}
ingress_rules = [
{
from_port = 0
to_port = 0
protocol = "tcp"
cidr_blocks = ["10.10.0.0/16"]
}
]
egress_rules = [
{
from_port = 0
to_port = 0
protocol = "-1"
cidr_blocks = ["10.10.0.0/16"]
}
]
}
public_alb_config = {
name = "Public-Alb"
listeners = {
"HTTP" = {
listener_port = 80
listener_protocol = "HTTP"
}
}
ingress_rules = [
{
from_port = 0
to_port = 0
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
]
egress_rules = [
{
from_port = 0
to_port = 0
protocol = "-1"
cidr_blocks = ["0.0.0.0/0"]
}
]
}
microservice_config = {
"Memo-frontend" = {
name = "Memo-frontend"
is_public = true
container_port = 3000
host_port = 3000
cpu = 256
memory = 512
desired_count = 1
alb_target_group = {
port = 3000
protocol = "HTTP"
path_pattern = ["/*"]
health_check_path = "/"
priority = 1
}
auto_scaling = {
max_capacity = 2
min_capacity = 1
cpu = {
target_value = 75
}
memory = {
target_value = 75
}
}
},
"Memo-Backend" = {
name = "Memo-Backend"
is_public = false
container_port = 5000
host_port = 5000
cpu = 256
memory = 512
desired_count = 1
alb_target_group = {
port = 5000
protocol = "HTTP"
path_pattern = ["/Memo-Backend*"]
health_check_path = "/"
priority = 1
}
auto_scaling = {
max_capacity = 2
min_capacity = 1
cpu = {
target_value = 75
}
memory = {
target_value = 75
}
}
}
}
the full code can be found here https://github.com/shashimal/terraform-ecs/blob/master/terraform.tfvars
i need the frontend container to run on port 3000 instead of 80 bc im hosting a react app