matrix-synapse/compose.keycloak.yml

---
version: "3.8"

services:
  app:
    secrets:
      - db_password
      - form_secret
      - keycloak_client_secret
      - macaroon_secret_key
      - registration_shared_secret
    environment:
      - KEYCLOAK_ENABLED
      - KEYCLOAK_NAME
      - KEYCLOAK_URL
      - KEYCLOAK_CLIENT_ID

secrets:
  keycloak_client_secret:
    external: true
    name: ${STACK_NAME}_keycloak_client_secret_${SECRET_KEYCLOAK_CLIENT_SECRET_VERSION}