docker-volume-s3-backup/render.py

#!/bin/python3

VERSIONS = (
    ('9', '3.6'),
    ('10', '3.8'),
    ('11', '3.10'),
    ('12', 'edge'),
)


def render(postgres_version, alpine_version):
    with open(f'template.Dockerfile') as f:
        template = f.read()

    rendered = template.format(alpine_version=alpine_version)

    with open(f'{postgres_version}.Dockerfile', 'w') as f:
        f.write('# This file is generated from template.Dockerfile. Do not edit it directly.\n')
        f.write('###########################################################################\n\n')
        f.write(rendered)


if __name__ == '__main__':
    for versions in VERSIONS:
        render(*versions)