services:
  synapse:
    image: matrixdotorg/synapse:v1.156.0
    restart: unless-stopped
    # The stock entrypoint (/start.py) does not generate the signing key when a
    # config file is provided, so generate any missing keys on first boot and
    # make sure the data volume is owned by the synapse user (991) before
    # handing over to the regular entrypoint.
    entrypoint:
      - /bin/sh
      - -c
      - |
        python -m synapse.app.homeserver --config-path /config/homeserver.yaml --keys-directory /data --generate-keys
        chown -R 991:991 /data
        exec /start.py
    environment:
      SYNAPSE_CONFIG_PATH: /config/homeserver.yaml
    volumes:
      - synapse-data:/data
      - ../files/homeserver.yaml:/config/homeserver.yaml:ro
      - ../files/log.config:/config/log.config:ro
    depends_on:
      postgres:
        condition: service_healthy
    healthcheck:
      test: ["CMD-SHELL", "curl -fSs http://localhost:8008/health || exit 1"]
      interval: 15s
      timeout: 5s
      retries: 10
      start_period: 90s

  postgres:
    image: postgres:16-alpine
    restart: unless-stopped
    environment:
      POSTGRES_USER: synapse
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_DB: synapse
      # Synapse requires a database with C collation
      POSTGRES_INITDB_ARGS: "--encoding=UTF-8 --lc-collate=C --lc-ctype=C"
    volumes:
      - postgres-data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U synapse -d synapse"]
      interval: 10s
      timeout: 5s
      retries: 5

volumes:
  synapse-data:
  postgres-data: