Dynamic configuration

[giovannicandido]

Problem: Some apps need access to configuration variables that are in the environment, for example: URL for the api server in a cloud or docker cluster, keycloak url, realm and clientId.

This are not so much sensitive data, but are dynamic.

A nice solution would be to expose env variables to the client, that way the container could override the variable on startup and the client will pick up.

This feature need support from the server.