Steeltoe largely relies on Config Server's logic for finding the backing files by specifying the app name, environment name and additional labels. There isn't currently a way to request additional arbitrary files, so you'd be limited to files following these patterns:
/{application}/{profile}[/{label}]
/{application}-{profile}.yml
/{label}/{application}-{profile}.yml
/{application}-{profile}.properties
/{label}/{application}-{profile}.properties
It's notable that application
in this pattern represents both your application name and a generic application
file for shared settings across multiple applications