# ecr — ECR repository

> **Module kind:** L1 primitive  |  **Version:** 1.0.0

A single ECR repository that hosts the container image for the ECS
task. The simplest container-registry module — one resource, two
inputs, two outputs.

## Resources

| Resource | Type | Purpose |
|----------|------|---------|
| repository | `aws_ecr_repository` | The ECR repository |

## Inputs

| Name | Type | Required | Default | Description |
|------|------|----------|---------|-------------|
| `name` | string | yes | — | The ECR repository name |
| `region` | string | yes | — | AWS region the repository is created in |

## Outputs

| Name | Type | Description |
|------|------|-------------|
| `repository_url` | string | The ECR repository URL |
| `repository_arn` | arn | The ECR repository ARN |

## Usage

```json
{
  "id": "ecr",
  "type": "aws:ecr:repository",
  "module": "ecr@1.0.0",
  "inputs": {
    "name": "acdl-microservice",
    "region": "us-east-1"
  }
}
```

The `repository_url` output is used to build the `image` input for
`ecs-service` (e.g. `<repository_url>:latest`).

## Compliance extension points

- **Image scanning** — add `image_scanning_configuration { scan_on_push = true }` for vulnerability scanning (SOC2 CC7.6, DORA ICT risk testing, HIPAA security monitoring).
- **Encryption** — add `encryption_configuration { encryption_type = "KMS", kms_key = ... }` with a customer-managed key (SOC2 CC6.1, HIPAA §164.312(a)(2)(iv), GDPR Art.32).
- **Image tag immutability** — add `image_tag_mutability = "IMMUTABLE"` to prevent tag overwriting (SOX §802, SOC2 CC6.1 integrity, DORA audit integrity).
- **Lifecycle policy** — add `aws_ecr_lifecycle_policy` to enforce image retention / cleanup (GDPR Art.5(2) data minimization, SOC2 CC5.2).
- **Access policy** — add a repository policy restricting pull/push to known roles (SOC2 CC6.1, HIPAA §164.308(a)(4)).

## Versioning

`1.0.0` — interface MAJOR, behavior MINOR, lifecycle PATCH. MAJOR bumps
require a new registry entry (immutable publication); old entries enter
a 12-month deprecation window.