feat: Add docker_labels

Allow the user to define a list of Docker labels without providing the
entire task definition.

Author: jwadolowski

.gitignore

@@ -12,3 +12,6 @@
 # Build Harness
 .build-harness
 build-harness/
+
+# Atmos
+.atmos

README.md

@@ -246,6 +246,7 @@ module "default_backend_web_app" {
 | <a name="input_deployment_minimum_healthy_percent"></a> [deployment\_minimum\_healthy\_percent](#input\_deployment\_minimum\_healthy\_percent) | The lower limit (as a percentage of `desired_count`) of the number of tasks that must remain running and healthy in a service during a deployment | `number` | `100` | no |
 | <a name="input_descriptor_formats"></a> [descriptor\_formats](#input\_descriptor\_formats) | Describe additional descriptors to be output in the `descriptors` output map.<br/>Map of maps. Keys are names of descriptors. Values are maps of the form<br/>`{<br/>   format = string<br/>   labels = list(string)<br/>}`<br/>(Type is `any` so the map values can later be enhanced to provide additional options.)<br/>`format` is a Terraform format string to be passed to the `format()` function.<br/>`labels` is a list of labels, in order, to pass to `format()` function.<br/>Label values will be normalized before being passed to `format()` so they will be<br/>identical to how they appear in `id`.<br/>Default is `{}` (`descriptors` output will be empty). | `any` | `{}` | no |
 | <a name="input_desired_count"></a> [desired\_count](#input\_desired\_count) | The desired number of tasks to start with. Set this to 0 if using DAEMON Service type. (FARGATE does not suppoert DAEMON Service type) | `number` | `1` | no |
+| <a name="input_docker_labels"></a> [docker\_labels](#input\_docker\_labels) | Map of Docker labels to assign to the container | `map(string)` | `null` | no |
 | <a name="input_ecr_enabled"></a> [ecr\_enabled](#input\_ecr\_enabled) | A boolean to enable/disable AWS ECR | `bool` | `true` | no |
 | <a name="input_ecr_image_tag_mutability"></a> [ecr\_image\_tag\_mutability](#input\_ecr\_image\_tag\_mutability) | The tag mutability setting for the ecr repository. Must be one of: `MUTABLE` or `IMMUTABLE` | `string` | `"IMMUTABLE"` | no |
 | <a name="input_ecr_scan_images_on_push"></a> [ecr\_scan\_images\_on\_push](#input\_ecr\_scan\_images\_on\_push) | Indicates whether images are scanned after being pushed to the repository (true) or not (false) | `bool` | `false` | no |

main.tf

@@ -81,6 +81,7 @@ module "container_definition" {
   container_memory             = var.container_memory
   container_memory_reservation = var.container_memory_reservation
   container_cpu                = var.container_cpu
+  docker_labels                = var.docker_labels
   start_timeout                = var.container_start_timeout
   stop_timeout                 = var.container_stop_timeout
   healthcheck                  = var.healthcheck

variables.tf

@@ -96,6 +96,12 @@ variable "container_memory" {
   default     = 512
 }
 
+variable "docker_labels" {
+  type        = map(string)
+  description = "Map of Docker labels to assign to the container"
+  default     = null
+}
+
 variable "container_start_timeout" {
   type        = number
   description = "Time duration (in seconds) to wait before giving up on resolving dependencies for a container"