Provide generic DockerContainer with init attributes #236

from typing import Any

import testcontainers.core.container

class ContainerContext(testcontainers.core.container.DockerContainer):
    def __init__(
        self, image: str, ports: list[int], env_vars: dict[str, str], **kwargs: Any
    ) -> None:
        super().__init__(image, **kwargs)

        self.with_exposed_ports(*ports)
        for env, value in env_vars.items():
            self.with_env(env, value)

import requests

def test_smoke():
    with container_context(
        "my_service_image",
        ports=[8000],
        env_vars={"SOME_ENV_SETTINGS": "some_value", "SOME_ENV_SETTINGS2": "other_value"},
    ) as con:
        r = requests.get(
            f"http://{con.get_container_host_ip()}:{con.get_exposed_port(8000)}"
        )
        assert r