import os

import yaml

CONFIG_FILE = os.environ.get('CONFIG_FILE', "config.yml")

if CONFIG_FILE is None:
    raise ValueError('CONFIG_FILE environment variable is not set')
elif not os.path.exists(CONFIG_FILE):
    raise ValueError(f'CONFIG_FILE {CONFIG_FILE} does not exist')

with open(CONFIG_FILE, 'r') as config_file:
    config = yaml.safe_load(config_file)


def main():
    pass


if __name__ == '__main__':
    main()