Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

PORTS_CHECK_DOCKER_IMAGE is not configurable which prevents ECS tasks from running on air-gapped environment

Expected Behavior

PORTS_CHECK_DOCKER_IMAGE can be configured via configuration option to allow use of any available image

How are you starting LocalStack?

With a docker-compose file

Steps To Reproduce

Run an ECS task in an environment where localstack/localstack is not available.

Environment

- OS: RHEL8
- Docker runtime version: Podman v4.2.0
- LocalStack: 1.3.1

Anything else?

No response