### 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_
def test_create_container_with_labels(self, docker_client, create_container):
        labels = {"foo": "bar", short_uid(): short_uid()}
        container = create_container("alpine", command=["dummy"], labels=labels)
        result = docker_client.inspect_container(container.container_id)
        result_labels = result.get("Config", {}).get("Labels")
        assert result_labels == labels