Maintain a running container

I am trying to start/run a container and pass commands consecutively. However, as soon as I run the container, it exits and no other exec_run() commands go through. The specific error message is as follows:

docker.errors.APIError: 409 Client Error for http+docker://localnpipe/v1.43/containers/{id}/exec: Conflict ("Container {id} is not running")

The code is as follows:

import docker

client = docker.from_env()
image = client.images.pull(docker.io/{}/{})
container = client.containers.run(image = image.id, detach = True, command = 'echo starting container', tty = True, stdin_open = true)
container.exec_run("echo execute command")

I am running version 6.1.3 on Python 3.11.5.

Start with the provided docker-py 6.1.3 example and inspect the container lifecycle around containers.run and exec_run. Reproduce it with Python 3.11.5, then verify whether consecutive exec_run calls work as expected or whether the behavior needs to be documented.