I'm using Keycloak to manage authentification of my app.
And using docker to build my keycloak image for both Dev and Prod environment.
Every time I build my docker image I import a new realm.json file and I have to modify manually the configuration to work with the corresponding environment ("Dev" & "Prod").
The idea is simply to use **system environment variable ** in the realm.json. I have tried to use {MY_ENV_VARIABLE} and {env.MY_ENV_VARIABLE} but nothing seem to work.