[keycloak-dev] Which part of keycloak code is responsible for processing standalone.xml ?

Hello, Could you please point me in the right direction? I'm trying to find out, why the providers map in DefaultKeycloakSessionFactory doesn't contain value for a provider, after I provide my own implementation? I have a configuration that works as expected in standalone desktop version, but doesn't work inside Docker. My researches lead me to org.keycloak.Config.getProvider(), so I've checked out the whole keycloak source, to find out, who is calling init() (I expect that there lands the parsed standalone.xml), but I've found out only org.keycloak.services.resources.KeycloakApplication, which is, I guess, not used in standalone mode? Where should I start my research? Do https://github.com/keycloak/keycloak contains all relevant sources, or I need to checkout more? Best regards, Lukasz Lech