Keycloak 26.3.1 with PostgreSQL 17.5 Alpine 3.22 Database

keycloak.yml

services:
  keycloak:
    image: quay.io/keycloak/keycloak:26.3.1
    container_name: keycloak
    environment:
      KEYCLOAK_ADMIN: admin
      KEYCLOAK_ADMIN_PASSWORD: admin
      KC_DB: postgres
      KC_DB_URL: jdbc:postgresql://postgres:5432/keycloak
      KC_DB_USERNAME: keycloak
      KC_DB_PASSWORD: keycloak
      KC_HOSTNAME: localhost
      KC_HOSTNAME_PORT: 8080
      KC_HOSTNAME_STRICT_HTTPS: false
      KC_HOSTNAME_STRICT_BACKCHANNEL: false
      KC_HTTP_ENABLED: true
      KC_METRICS_ENABLED: true
      KC_HEALTH_ENABLED: true
    command: start-dev
    volumes:
      - keycloak_data:/opt/keycloak/data
      - ./themes:/opt/keycloak/themes
      - ./providers:/opt/keycloak/providers
    ports:
      - "8080:8080"
    depends_on:
      - postgres
    networks:
      - keycloak-network

  postgres:
    image: postgres:17.5-alpine3.22
    container_name: keycloak-postgres
    environment:
      POSTGRES_DB: keycloak
      POSTGRES_USER: keycloak
      POSTGRES_PASSWORD: keycloak
    volumes:
      - postgres_data:/var/lib/postgresql/data
    networks:
      - keycloak-network

volumes:
  keycloak_data:
    driver: local
  postgres_data:
    driver: local

networks:
  keycloak-network:
    driver: bridge