Keycloak authorizations in docker network bridge mode : how to access localhost?
There are few things you can do about it. One is to use host entries on your local for keycloak host. This way your browser on host will recognize the keycloak host and use it for auth.
Otherwise you shouldn't be doing it this way. You should put a nginx container for which port 80 is mapped to the host. And then you can use url based patterns to redirect to port 8000 or 9000