chore: add log environment safety checks

Author: Mathew-Estafanous

examples/ecs_fargate/README.md

@@ -9,7 +9,7 @@ This example showcases a simple ECS Fargate Task Definition with out of the box
   * Set the `dd_api_key` to the Datadog API Key (required)
   * Set the `dd_service` to the name of the service you want to use to filter for the resource in Datadog
   * Set the `dd_site` to the [Datadog destination site](https://docs.datadoghq.com/getting_started/site/) for your metrics, traces, and logs
-  * (Optional) Set `task_family_name` to the name of the task family (default: "datadog-terraform-app")
+  * (Optional) Set `task_family_name` to the name of the task family (default: "dummy-terraform-app")
 * Run the following commands:
 
 ```bash

modules/ecs_fargate/datadog.tf

@@ -338,9 +338,11 @@ locals {
     )
   ]
 
+  dd_log_environment = var.dd_log_collection.fluentbit_config.environment != null ? var.dd_log_collection.fluentbit_config.environment : []
+
   dd_log_agent_env = concat(
     local.ust_env_vars,
-    var.dd_log_collection.fluentbit_config.environment
+    local.dd_log_environment
   )
 
   # Datadog log router container definition