### 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(NoSuchImage):
            docker_client.create_container("this_image_does_hopefully_not_exist_42069")
    def test_exec_in_container(
        self, docker_client: ContainerClient, dummy_container: ContainerInfo
    ):
        docker_client.start_container(dummy_container.container_id)
        output, _ = docker_client.exec_in_container(
            dummy_container.container_id, command=["echo", "foobar"]
        )
        output = output.decode(config.DEFAULT_ENCODING)
        assert "foobar" == output.strip()
    def test_exec_in_container_not_running_raises_exception(
        self, docker_client: ContainerClient, dummy_container
    ):
        with pytest.raises(ContainerException):
            
            docker_client.exec_in_container(
                dummy_container.container_id, command=["echo", "foobar"]
            )
    def test_exec_in_container_with_workdir(self, docker_client: ContainerClient, dummy_container):
        docker_client.start_container(dummy_container.container_id)
        workdir = "/proc/sys"
        output, _ = docker_client.exec_in_container(
            dummy_container.container_id, command=["pwd"], workdir=workdir
        )
        assert to_str(output).strip() == workdir
    def test_exec_in_container_with_env(self, docker_client: ContainerClient, dummy_container):