### Is there an existing issue for this?

- [X] 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

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


### Anything else?

_No response_
container_name = _random_container_name()
        message = "test_message_stdin"
        try:
            output, _ = docker_client.run_container(
                "alpine",
                name=container_name,
                interactive=True,
                stdin=message.encode(config.DEFAULT_ENCODING),
                command=["cat"],
            )
            assert message == output.decode(config.DEFAULT_ENCODING).strip()
        finally:
            docker_client.remove_container(container_name)
    def test_exec_in_container_with_stdin(self, docker_client: ContainerClient, dummy_container):
        docker_client.start_container(dummy_container.container_id)
        message = "test_message_stdin"
        output, _ = docker_client.exec_in_container(
            dummy_container.container_id,
            interactive=True,
            stdin=message.encode(config.DEFAULT_ENCODING),
            command=["cat"],
        )
        assert message == output.decode(config.DEFAULT_ENCODING).strip()
    def test_exec_in_container_with_stdin_stdout_stderr(