Add terraform scripts

Author: felipeoriani

terraform/environments/dependencies/main.tf

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+locals {
+  region = "us-east-1"
+}
+
+terraform {
+  backend "s3" {
+    bucket = "terraform-tasks-dependencies"
+    key    = "dependencies"
+    region = "us-east-1"
+  }
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 5.53"
+    }
+  }
+}
+
+provider "aws" {
+  region = local.region
+
+  default_tags {
+    tags = {
+      app         = var.app
+      environment = var.environment
+      owner       = "felipe"
+      url         = "https://github.com/felipeoriani"
+    }
+  }
+}

terraform/environments/dependencies/output.tf

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+output "task_service_repository_url" {
+  value       = aws_ecr_repository.task_service_repository.repository_url
+  description = "AWS ECR task service repository URL"
+}
+
+output "task_service_repository_name" {
+  value       = aws_ecr_repository.task_service_repository.name
+  description = "AWS ECR task service repository name"
+}
+
+output "task_service_repository_arn" {
+  value       = aws_ecr_repository.task_service_repository.arn
+  description = "AWS ECR task service repository ARN"
+}

terraform/environments/dependencies/resources.tf

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+locals {
+  imageCountMoreThan = 3
+}
+
+resource "aws_ecr_repository" "task_service_repository" {
+  name = "${var.app}-service-${var.environment}"
+}
+
+resource "aws_ecr_lifecycle_policy" "task_service_repository_policy" {
+  repository = aws_ecr_repository.task_service_repository.name
+  policy     = <<EOF
+{
+  "rules": [
+    {
+      "rulePriority": 1,
+      "description": "Retain only the last ${local.imageCountMoreThan} images.",
+      "selection": {
+        "tagStatus": "any",
+        "countType": "imageCountMoreThan",
+        "countNumber": ${local.imageCountMoreThan}
+      },
+      "action": {
+        "type": "expire"
+      }
+    }
+  ]
+}
+EOF
+}

terraform/environments/dependencies/variables.tf

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+variable "app" {
+  default     = "task"
+  description = "App name used across the resources."
+}
+
+variable "environment" {
+  default     = "staging"
+  description = "Environment to work on."
+}