Add a wait_for_healthcheck method to DockerCompose

[csikb]

It's possible to check if the healthcheck passed trought the cli.
docker ps --format json will list all the services running and their corresponding healthchecks.

Proposed method signature: compose.wait_for_healthcheck(sec: int = 10)

High level description how it should work:
Iterate trough services check if healthcheck is healthy.
If not: wait and repeat until timeout.

testcontaners java and node has the option to wait for healthcheck. It would be nice if testcontainers-python would have the same funtionality

[rhoban13]

Ideally this should work for even the DockerContainer as well.

[lukasz-matter]

A very simple implementation for a DockerContainer can look like this:

    with container:
        start_time = time.time()
        underlying_container = container.get_wrapped_container()
        while time.time() - start_time < 10:
            underlying_container.reload()
            if underlying_container.health == 'healthy':
                print(f"Container is healthy!")
                break
            time.sleep(.1)
        else:
            raise TimeoutError(
                f"Container status is not healthy after 10s - it's {underlying_container.health}!"
            )
        yield container