Update README

Author: nikola-acuris

README.md

@@ -2,34 +2,39 @@
 
 [![Test](https://github.com/mergermarket/terraform-acuris-aws-lambda/actions/workflows/test.yml/badge.svg)](https://github.com/mergermarket/terraform-acuris-aws-lambda/actions/workflows/test.yml)
 
-This module will deploy a Lambda function.
+This module will deploy a Lambda function. It supports both Zip and Image deployments.
 
-## Module Input Variables
+> NOTE 1: if image_uri is set then ECR Image will be deployed regardless of what Zip deployment properties are set to.
+
+> NOTE 2: if both security_group_ids and subnet_ids are empty then the Lambda will not have access to resources within a VPC.
+
+## Module input variables (shared)
 
 - `function_name` - (string) - **REQUIRED** - The name of the Lambda function.
-- `handler` - (map) - **REQUIRED (Zip deployment)** - The function within your code that Lambda calls to begin execution.
 - `lambda_env` - (map) - Environment parameters passed to the Lambda function.
 - `lambda_role_policy` (string) - The Lambda IAM Role Policy.
 - `log_subscription_filter` - (string) - Subscription filter to filter logs sent to datadog.
 - `memory_size` (number) - Amount of memory in MB your Lambda Function can use at runtime.
-- `runtime` - (string) - **REQUIRED (Zip deployment)** - The runtime environment for the Lambda function you are uploading.
-- `s3_bucket` - (string) - **REQUIRED  (Zip deployment)** - The name of the bucket containing your uploaded Lambda deployment package.
-- `s3_key` - (string) - **REQUIRED (Zip deployment)** - The s3 key for your Lambda deployment package.
-- `image_uri` - (string) - **REQUIRED (Image deployment)** - Uri to the image in ECR repo.
-- `image_config_command` - (list) - Used only if Image deployment. List of values with which to override CMD entry in the image.
-- `image_config_entry_point` - (list) - Used only if Image deployment. List of values with which to override ENTRYPOINT entry in the image.
-- `image_config_working_directory` - (string) - Used only if Image deployment. Value with which to override WORKDIR entry in the image.
 - `security_group_ids` - (list) - The VPC security groups assigned to the Lambda.
 - `subnet_ids` - (list) - The VPC subnets in which the Lambda runs.
 - `timeout` (number) - The maximum time in seconds that the Lambda can run for.
 - `reserved_concurrent_executions` (number) - The amount of reserved concurrent executions for this lambda function.
 - `tags` (map) - A mapping of tags to assign to this lambda function.
 - `datadog_log_subscription_arn` - (string) - Log subscription arn for shipping logs to datadog.
-- `layers` - (list) - Used only if Zip deployment. ARNs of the layers to attach to the lambda function in order.
 
-> NOTE 1: if both security_group_ids and subnet_ids are empty then the Lambda will not have access to resources within a VPC.
+### Zip deployment variables
+- `runtime` - (string) - **REQUIRED** - The runtime environment for the Lambda function you are uploading.
+- `handler` - (map) - **REQUIRED** - The function within your code that Lambda calls to begin execution.
+- `s3_bucket` - (string) - **REQUIRED** - The name of the bucket containing your uploaded Lambda deployment package.
+- `s3_key` - (string) - **REQUIRED** - The s3 key for your Lambda deployment package.
+- `layers` - (list) - ARNs of the layers to attach to the lambda function in order.
+
+### Image deployment variables
+- `image_uri` - (string) - **REQUIRED** - Uri to the image in ECR repo.
+- `image_config_command` - (list) - List of values with which to override CMD entry in the image.
+- `image_config_entry_point` - (list) - List of values with which to override ENTRYPOINT entry in the image.
+- `image_config_working_directory` - (string) - Value with which to override WORKDIR entry in the image.
 
-> NOTE 2: if image_uri is set then ECR Image will be deployed regardless of what Zip deployment properties are set to.
 
 ## Usage