### 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_
self, docker_client: ContainerClient, create_container
    ):
        info = create_container("alpine", remove=True, command=["echo", "foobar"])
        
        assert 1 == len(docker_client.list_containers(f"id={info.container_id}"))
        
        output, _ = docker_client.start_container(info.container_id, attach=True)
        output = output.decode(config.DEFAULT_ENCODING)
        time.sleep(1)  
        assert 0 == len(docker_client.list_containers(f"id={info.container_id}"))
        
        assert "foobar" in output
    @pytest.mark.skip_offline
    def test_create_container_non_existing_image(self, docker_client: ContainerClient):