3.2. Indentation and nesting
Many Red Hat Quay configuration fields require indentation to indicate nested structures. Indentation must be done by using white spaces, or literal space characters; tab characters are not allowed by design. Indentation must be consistent across the file. The following YAML snippet shows you how the BUILDLOGS_REDIS field uses indentation for the required host, password, and port fields:
# ...
BUILDLOGS_REDIS:
host: quay-server.example.com
password: example-password
port: 6379
# ...