bidon/tests/settings.py

import os

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'TEST': {
            'NAME': ('bidon-test-%s' % os.environ.get("BUILD_TAG", "").replace('%2', '-').removeprefix('jenkins-'))[:63],
        },
    }
}