docker-compose file for keycloak

docker-compose.yml

version: "3.9"

services:
  postgres:
    image: postgres:13.2
    restart: unless-stopped
    environment:
      POSTGRES_DB: ${POSTGRESQL_DB}
      POSTGRES_USER: ${POSTGRESQL_USER}
      POSTGRES_PASSWORD: ${POSTGRESQL_PASS}
    volumes:
      - postgres_data:/var/lib/postgresql/data

  keycloak:
    depends_on:
      - postgres
    container_name: keycloak
    environment:
      DB_VENDOR: postgres
      DB_ADDR: postgres
      DB_DATABASE: ${POSTGRESQL_DB}
      DB_USER: ${POSTGRESQL_USER}
      DB_PASSWORD: ${POSTGRESQL_PASS}
      VIRTUAL_HOST: ${VIRTUAL_HOST}
      LETSENCRYPT_HOST: ${LETSENCRYPT_HOST}
      LETSENCRYPT_EMAIL: ${LETSENCRYPT_EMAIL}
      VIRTUAL_PORT: "8080"
      HTTPS_METHOD: redirect
      PROXY_ADDRESS_FORWARDING: "true" # <==== very important if you use reverse proxy
    image: jboss/keycloak:${KEYCLOAK_VERSION}
    restart: unless-stopped

volumes:
  postgres_data:

#Use this configuration in production with nginx-proxy container
networks:
  default:
    external:
      name: nginx-proxy