https://spring.io/projects/spring-cloud-config

https://docs.spring.io/spring-cloud-config/docs/current/reference/html/
https://docs.spring.io/spring-cloud-config/docs/current/reference/html/#_file_system_backend
    # spring.profiles.active=native
    # spring.cloud.config.server.native.searchLocations
    export SPRING_CLOUD_CONFIG_SERVER_NATIVE_SEARCHLOCATIONS=file://...


samples
https://github.com/spring-cloud-samples/configserver
https://github.com/spring-cloud-samples/configserver/blob/main/src/main/resources/application.yml

https://github.com/spring-cloud-samples/config-repo

/{app}/{profile} 	              Configuration data for app in Spring profile (comma-separated).
/{app}/{profile}/{label} 	      Add a git label
/{app}/{profile}{label}/{path}  An environment-specific plain text config file (at "path")

curl localhost:8888/foo/development