ci(release): fix extension variables for image

    # If image isn't specified in the job but extends is

    elif "extends" in data[args.job].keys():

        variables = {}

        if "variables" in job_data:

            variables = job_data['variables']

        try:

            # if the job extends another one, we fetch the extension variables

            # and update them

            if isinstance(data[data[args.job]['extends']]['image'], dict):

                output_image = raw_or_replace_tag(data[data[args.job]['extends']]['image']['name'],

                                                  job_data['variables'])

                extension = data[data[args.job]['extends']]

                if "variables" in extension:

                    variables.update(extension['variables'])

                output_image = raw_or_replace_tag(extension['image']['name'],

                                                  variables)

            else:

                output_image = raw_or_replace_tag(data[data[args.job]['extends']]['image'], job_data['variables'])

                extension = data[data[args.job]['extends']]

                if "variables" in extension:

                    variables.update(extension['variables'])

                output_image = raw_or_replace_tag(data[data[args.job]['extends']]['image'], variables)

        # If the extended job isn't in the file, it produce a KeyError

        except KeyError:

            logging.warning(