[keycloak-user] ENV in keycloak.json does not seem to be working, base64 errors

Hi I am trying to use env vars in keycloak.json but I am getting base64 errors. My keycloak.json: { "realm": "myrealm", "realm-public-key": "${env.KC_REALM_PUBLIC_KEY}", "auth-server-url": "${env.KC_AUTH_SERVER_URL}", "ssl-required": "none", "resource": "myrealm", "public-client": true } I am deploying my ear to WildFly 10 using the following properties: <property name="KC_REALM_PUBLIC_KEY" value="public key here"/> <property name="KC_AUTH_SERVER_URL" value="http://localhost:8080/auth"/> Error on deploy: Bad Base64 input character decimal 36 in array position 0.. (char 36 is $) It seems that KC wants to parse the value as string instead of trying to resolve the env variable. Looking through the code and commits (https://issues.jboss.org/browse/KEYCLOAK-1289) this should work. What am I doing wrong?