conftest.py

import pytest
import os
from selenium import webdriver

host = os.environ.get('MAIN_HOST')

@pytest.fixture(scope='function')
def driver():
    options = webdriver.ChromeOptions()
    options.add_argument('--headless')
    driver = webdriver.Remote(
    command_executor=f'http://{host}:4444/wd/hub', options=options)
    driver.maximize_window()
    yield driver
    driver.quit()