### 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_
with pytest.raises(NoSuchContainer):
            docker_client.stream_container_logs("container_hopefully_does_not_exist")
    def test_stream_logs(self, docker_client: ContainerClient):
        container_name = _random_container_name()
        try:
            docker_client.run_container(
                "alpine",
                name=container_name,
                detach=True,
                command=["env"],
            )
            stream = docker_client.stream_container_logs(container_name)
            for line in stream:
                line = line.decode("utf-8")
                assert line.split("=")[0] in ["HOME", "PATH", "HOSTNAME"]
            stream.close()
        finally:
            docker_client.remove_container(container_name)
    @pytest.mark.skip_offline
    def test_pull_docker_image(self, docker_client: ContainerClient):