def METHOD_NAME(env_yaml):
    # we assume that the project root is one directory above build-scripts
    project_root = os.path.dirname(os.path.dirname(__file__))
    additional_content_directories = env_yaml.get("additional_content_directories", [])
    absolute_additional_content_dirs = []
    for dirname in additional_content_directories:
        if not os.path.isabs(dirname):
            dirname = os.path.join(project_root, dirname)
        absolute_additional_content_dirs.append(dirname)
    return absolute_additional_content_dirs