version: "3.9"

# ─────────────────────────────────────────────────────────────────────────────
# Usage:
#   BACKEND_SERVERS="jetson1=192.168.1.101:50052,jetson2=192.168.1.102:50052" \
#     docker compose -f docker-compose.gateway.yml up --build
# ─────────────────────────────────────────────────────────────────────────────

services:
  gateway:
    build:
      context: .
      dockerfile: docker/Dockerfile.gateway
    environment:
      GATEWAY_PORT: "50051"
      BACKEND_SERVERS: ${BACKEND_SERVERS:?BACKEND_SERVERS must be set (e.g. server1=192.168.1.101:50052,server2=192.168.1.102:50052)}
      HEALTH_CHECK_INTERVAL_S: ${HEALTH_CHECK_INTERVAL_S:-5}
      REQUEST_TIMEOUT_S: ${REQUEST_TIMEOUT_S:-10}
      LOG_LEVEL: ${LOG_LEVEL:-INFO}
      # TLS config
      # TLS_ENABLED: "false"
      # TLS_CA_CERT: "/certs/ca.crt"
      # TLS_CLIENT_CERT: "/certs/client.crt"
      # TLS_CLIENT_KEY: "/certs/client.key"
    ports:
      - "${GATEWAY_PORT:-50051}:50051"
    restart: unless-stopped