Fix autoprovisioning (keycload) deployment example

deployments/examples/ocis_keycloak/docker-compose.yml

@@ -49,7 +49,10 @@ services:
       ocis-net:
     entrypoint:
       - /bin/sh
-      - /entrypoint-override.sh
+    # run ocis init to initialize a configuration file with random secrets
+    # it will fail on subsequent runs, because the config file already exists
+    # therefore we ignore the error and then start the ocis server
+    command: ["-c", "ocis init || true; ocis server"]
     environment:
       # Keycloak IDP specific configuration
       PROXY_AUTOPROVISION_ACCOUNTS: "true"
@@ -64,7 +67,6 @@ services:
       OCIS_LOG_LEVEL: ${OCIS_LOG_LEVEL:-error} # make oCIS less verbose
       PROXY_TLS: "false" # do not use SSL between Traefik and oCIS
       # demo users
-      ACCOUNTS_DEMO_USERS_AND_GROUPS: "${DEMO_USERS:-false}"  # deprecated, remove after switching to LibreIDM
       IDM_CREATE_DEMO_USERS: "${DEMO_USERS:-false}"
       # change default secrets
       IDP_LDAP_BIND_PASSWORD: ${IDP_LDAP_BIND_PASSWORD:-idp}
@@ -75,7 +77,6 @@ services:
       # INSECURE: needed if oCIS / Traefik is using self generated certificates
       OCIS_INSECURE: "${INSECURE:-false}"
     volumes:
-      - ./config/ocis/entrypoint-override.sh:/entrypoint-override.sh
       - ocis-data:/var/lib/ocis
     labels:
       - "traefik.enable=true"