How to access to the gateway IP of a docker_network resource ?

[baptistecdr]

Hello,

I'm fairly new to Terraform and I tried to use it for deployment automation. So far it's great.

I created a docker_network resource like this:

resource "docker_network" "my_network" {
  name = "my_network"
}

And I'm trying to access to the gateway in order to create the reverse proxy in nginx using a local_file resource.

resource "local_file" "subdomain_conf" {
  content = <<-EOT
server {
    location / {
        set $upstream_app 172.19.0.1; 
    }
}
EOT

Instead of hard-coding the gateway address of my_network (172.19.0.1), I want to use the one given by the Terraform resource: ${docker_network.my_network.ipam_config.???.gateway} but I don't know how to access it (if possible ?)

Can someone help me please ?

Terraform v1.3.0
on linux_amd64

docker = {
      source  = "kreuzwerker/docker"
      version = "2.22.0"
    }

Thanks in advance!

[baptistecdr]

Self-aswering ${one(docker_network.my_network.ipam_config).gateway}