# Local / single-host deployment.
#
# Secrets come from .env (gitignored). Copy .env.example to .env and set a
# strong POSTGRES_PASSWORD plus a matching DATABASE_URL before `docker compose
# up`. For a production database, point DATABASE_URL at a TLS-enabled endpoint,
# e.g. postgres://user:pass@db.example.com:5432/ctcloud?sslmode=verify-full
#
# The compose bridge network is private; sslmode=disable is only acceptable here
# because the database is not reachable from outside the stack.
services:
  postgres:
    image: postgres:17-alpine
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-ctcloud}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?set POSTGRES_PASSWORD in .env}
      POSTGRES_DB: ${POSTGRES_DB:-ctcloud}
    volumes:
      - pgdata:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-ctcloud} -d ${POSTGRES_DB:-ctcloud}"]
      interval: 5s
      timeout: 5s
      retries: 12
    mem_limit: 1g
    cpus: 2.0
    pids_limit: 256
    logging:
      driver: json-file
      options: { max-size: "10m", max-file: "3" }
    restart: unless-stopped

  ctcloud:
    build: .
    depends_on:
      postgres:
        condition: service_healthy
    environment:
      DATABASE_URL: ${DATABASE_URL:?set DATABASE_URL in .env}
      METRICS_ADDR: ":9090"
      LOG_LEVEL: ${LOG_LEVEL:-info}
      DNS_SERVERS: ${DNS_SERVERS:-1.1.1.1:53,8.8.8.8:53,1.0.0.1:53}
      DNS_WORKERS: ${DNS_WORKERS:-16}
      ACTIVE_PROBING: ${ACTIVE_PROBING:-false}
      # START_AT_END: "true"   # skip historical certificates on first run
    # Metrics/health are bound to loopback only: scrape from the host or a
    # sidecar, never expose them publicly (there is no auth on this listener).
    ports:
      - "127.0.0.1:9090:9090"
    # No application volume: the container is stateless apart from PostgreSQL.
    read_only: true
    tmpfs:
      - /tmp:size=16m,noexec,nosuid
    security_opt:
      - no-new-privileges:true
    cap_drop:
      - ALL
    mem_limit: 1g
    cpus: 2.0
    pids_limit: 512
    logging:
      driver: json-file
      options: { max-size: "10m", max-file: "3" }
    restart: unless-stopped

volumes:
  pgdata: