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feat: Add submodule to handle creation of docker images (#162)
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‎examples/container-image/README.md‎

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@@ -21,33 +21,26 @@ Note that this example may create resources which cost money. Run `terraform des
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|------|---------|
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| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13 |
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| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 3.19 |
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| <a name="requirement_docker"></a> [docker](#requirement\_docker) | >= 2.8.0 |
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| <a name="requirement_random"></a> [random](#requirement\_random) | >= 2 |
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## Providers
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| Name | Version |
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|------|---------|
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| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 3.19 |
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| <a name="provider_docker"></a> [docker](#provider\_docker) | >= 2.8.0 |
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| <a name="provider_random"></a> [random](#provider\_random) | >= 2 |
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## Modules
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| Name | Source | Version |
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|------|--------|---------|
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| <a name="module_docker_image"></a> [docker\_image](#module\_docker\_image) | ../../modules/docker-build | |
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| <a name="module_lambda_function_from_container_image"></a> [lambda\_function\_from\_container\_image](#module\_lambda\_function\_from\_container\_image) | ../../ | |
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## Resources
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| Name | Type |
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|------|------|
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| [aws_ecr_repository.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_repository) | resource |
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| [docker_registry_image.app](https://registry.terraform.io/providers/kreuzwerker/docker/latest/docs/resources/registry_image) | resource |
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| [random_pet.this](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/pet) | resource |
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| [aws_caller_identity.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
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| [aws_ecr_authorization_token.token](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ecr_authorization_token) | data source |
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| [aws_region.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
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## Inputs
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| Name | Description |
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|------|-------------|
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| <a name="output_docker_image_uri"></a> [docker\_image\_uri](#output\_docker\_image\_uri) | The ECR Docker image URI used to deploy Lambda Function |
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| <a name="output_lambda_cloudwatch_log_group_arn"></a> [lambda\_cloudwatch\_log\_group\_arn](#output\_lambda\_cloudwatch\_log\_group\_arn) | The ARN of the Cloudwatch Log Group |
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| <a name="output_lambda_function_arn"></a> [lambda\_function\_arn](#output\_lambda\_function\_arn) | The ARN of the Lambda Function |
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| <a name="output_lambda_function_invoke_arn"></a> [lambda\_function\_invoke\_arn](#output\_lambda\_function\_invoke\_arn) | The Invoke ARN of the Lambda Function |

‎examples/container-image/main.tf‎

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##################
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# Container Image
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##################
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image_uri = docker_registry_image.app.name
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image_uri = module.docker_image.image_uri
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package_type = "Image"
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}
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#################
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# ECR Repository
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#################
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resource "aws_ecr_repository" "this" {
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name = random_pet.this.id
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}
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###############################################
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# Create Docker Image and push to ECR registry
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###############################################
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data "aws_caller_identity" "this" {}
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data "aws_region" "current" {}
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data "aws_ecr_authorization_token" "token" {}
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locals {
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ecr_address = format("%v.dkr.ecr.%v.amazonaws.com", data.aws_caller_identity.this.account_id, data.aws_region.current.name)
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ecr_image = format("%v/%v:%v", local.ecr_address, aws_ecr_repository.this.id, "1.0")
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}
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provider "docker" {
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registry_auth {
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address = local.ecr_address
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username = data.aws_ecr_authorization_token.token.user_name
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password = data.aws_ecr_authorization_token.token.password
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}
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}
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resource "docker_registry_image" "app" {
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name = local.ecr_image
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module "docker_image" {
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source = "../../modules/docker-build"
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build {
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context = "context"
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}
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create_ecr_repo = true
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ecr_repo = random_pet.this.id
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image_tag = "1.0"
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source_path = "context"
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}

‎examples/container-image/outputs.tf‎

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description = "The ARN of the Cloudwatch Log Group"
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value = module.lambda_function_from_container_image.lambda_cloudwatch_log_group_arn
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}
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# Docker Image
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output "docker_image_uri" {
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description = "The ECR Docker image URI used to deploy Lambda Function"
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value = module.docker_image.image_uri
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}

‎examples/container-image/versions.tf‎

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required_providers {
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aws = ">= 3.19"
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random = ">= 2"
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docker = {
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source = "kreuzwerker/docker"
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version = ">= 2.8.0"
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}
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}
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}

‎modules/docker-build/README.md‎

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# Build Docker Image module
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Terraform module that builds Docker image from `Dockerfile` and pushes it to ECR repository. Lambda can deploy container images from private ECR.
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This Terraform module is the part of [serverless.tf framework](https://github.com/antonbabenko/serverless.tf), which aims to simplify all operations when working with the serverless in Terraform.
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## Usage
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### Complete example of Lambda Function deployment via AWS CodeDeploy
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```hcl
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module "lambda_function" {
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source = "terraform-aws-modules/lambda/aws"
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function_name = "my-lambda1"
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create_package = false
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image_uri = module.docker_image.image_uri
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package_type = "Image"
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}
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module "docker_image" {
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source = "terraform-aws-modules/lambda/aws//modules/docker-build"
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create_ecr_repo = true
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ecr_repo = "my-cool-ecr-repo"
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image_tag = "1.0"
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source_path = "context"
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}
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```
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## Examples
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* [Container Image](https://github.com/terraform-aws-modules/terraform-aws-lambda/tree/master/examples/container-image) - Creates Docker Image and deploy Lambda Function using it.
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<!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
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## Requirements
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| Name | Version |
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|------|---------|
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| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13 |
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| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 3.35 |
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| <a name="requirement_docker"></a> [docker](#requirement\_docker) | >= 2.8.0 |
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## Providers
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| Name | Version |
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|------|---------|
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| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 3.35 |
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| <a name="provider_docker"></a> [docker](#provider\_docker) | >= 2.8.0 |
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## Modules
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No modules.
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## Resources
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| Name | Type |
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|------|------|
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| [aws_ecr_repository.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_repository) | resource |
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| [docker_registry_image.this](https://registry.terraform.io/providers/kreuzwerker/docker/latest/docs/resources/registry_image) | resource |
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| [aws_caller_identity.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
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| [aws_ecr_authorization_token.token](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ecr_authorization_token) | data source |
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| [aws_region.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
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## Inputs
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| Name | Description | Type | Default | Required |
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|------|-------------|------|---------|:--------:|
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| <a name="input_create_ecr_repo"></a> [create\_ecr\_repo](#input\_create\_ecr\_repo) | Controls whether ECR repository for Lambda image should be created | `bool` | `false` | no |
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| <a name="input_docker_file_path"></a> [docker\_file\_path](#input\_docker\_file\_path) | Path to Dockerfile in source package | `string` | `"Dockerfile"` | no |
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| <a name="input_ecr_repo"></a> [ecr\_repo](#input\_ecr\_repo) | Name of ECR repository to use or to create | `string` | `null` | no |
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| <a name="input_image_tag"></a> [image\_tag](#input\_image\_tag) | Image tag to use. If not specified current timestamp in format 'YYYYMMDDhhmmss' will be used. This can lead to unnecessary rebuilds. | `string` | `null` | no |
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| <a name="input_source_path"></a> [source\_path](#input\_source\_path) | Path to folder containing application code | `string` | `null` | no |
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## Outputs
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| Name | Description |
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|------|-------------|
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| <a name="output_image_uri"></a> [image\_uri](#output\_image\_uri) | The ECR image URI for deploying lambda |
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<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
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## Authors
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Module managed by [Anton Babenko](https://github.com/antonbabenko). Check out [serverless.tf](https://serverless.tf) to learn more about doing serverless with Terraform.
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Please reach out to [Betajob](https://www.betajob.com/) if you are looking for commercial support for your Terraform, AWS, or serverless project.
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## License
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Apache 2 Licensed. See LICENSE for full details.

‎modules/docker-build/main.tf‎

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data "aws_region" "current" {}
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data "aws_caller_identity" "this" {}
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data "aws_ecr_authorization_token" "token" {}
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locals {
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ecr_address = format("%v.dkr.ecr.%v.amazonaws.com", data.aws_caller_identity.this.account_id, data.aws_region.current.name)
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ecr_repo = var.create_ecr_repo ? aws_ecr_repository.this[0].id : var.ecr_repo
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image_tag = coalesce(var.image_tag, formatdate("YYYYMMDDhhmmss", timestamp()))
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ecr_image_name = format("%v/%v:%v", local.ecr_address, local.ecr_repo, local.image_tag)
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}
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provider "docker" {
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registry_auth {
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address = local.ecr_address
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username = data.aws_ecr_authorization_token.token.user_name
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password = data.aws_ecr_authorization_token.token.password
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}
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}
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resource "docker_registry_image" "this" {
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name = local.ecr_image_name
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build {
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context = var.source_path
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dockerfile = var.docker_file_path
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}
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}
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resource "aws_ecr_repository" "this" {
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count = var.create_ecr_repo ? 1 : 0
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name = var.ecr_repo
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}

‎modules/docker-build/outputs.tf‎

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output "image_uri" {
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description = "The ECR image URI for deploying lambda"
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value = docker_registry_image.this.name
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}

‎modules/docker-build/variables.tf‎

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variable "create_ecr_repo" {
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description = "Controls whether ECR repository for Lambda image should be created"
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type = bool
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default = false
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}
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variable "ecr_repo" {
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description = "Name of ECR repository to use or to create"
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type = string
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default = null
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}
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variable "image_tag" {
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description = "Image tag to use. If not specified current timestamp in format 'YYYYMMDDhhmmss' will be used. This can lead to unnecessary rebuilds."
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type = string
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default = null
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}
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variable "source_path" {
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description = "Path to folder containing application code"
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type = string
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default = null
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}
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variable "docker_file_path" {
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description = "Path to Dockerfile in source package"
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type = string
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default = "Dockerfile"
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}

‎modules/docker-build/versions.tf‎

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terraform {
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required_version = ">= 0.13"
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required_providers {
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aws = ">= 3.35"
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docker = {
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source = "kreuzwerker/docker"
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version = ">= 2.8.0"
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}
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}
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}

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