docker-compose.yml

version: "3.8"

services:
  # ...

  keycloak-config-cli:
    image: bitnami/keycloak-config-cli:5-debian-11
    environment:
      KEYCLOAK_URL: http://caddy/oidc/
      KEYCLOAK_USER: ${KEYCLOAK_USER:-admin}
      KEYCLOAK_PASSWORD: ${KEYCLOAK_PASSWORD:-!ChangeMe!}
      KEYCLOAK_AVAILABILITYCHECK_ENABLED: true
      KEYCLOAK_AVAILABILITYCHECK_TIMEOUT: 120s
      IMPORT_FILES_LOCATIONS: '/config/*'
    depends_on:
      - keycloak
    volumes:
      - ./keycloak-config:/config

realm-demo.json

{
  "realm": "demo",
  "displayName": "API Platform - Demo",
  "enabled": true,
  "registrationAllowed": false,
  "users": [
    {
      "username": "admin",
      "enabled": true,
      "emailVerified": true,
      "firstName": "Chuck",
      "lastName": "NORRIS",
      "email": "admin@example.com",
      "credentials": [
        {
          "type": "password",
          "value": "Pa55w0rd"
        }
      ]
    }
  ],
  "clients": [
    {
      "clientId": "api-platform-swagger",
      "enabled": true,
      "redirectUris": ["*"],
      "webOrigins": ["*"],
      "publicClient": true
    },
    {
      "clientId": "api-platform-pwa",
      "enabled": true,
      "redirectUris": ["*"],
      "webOrigins": ["*"],
      "publicClient": true
    }
  ]
}