# Standalone Compose file for the Pi.
#
# If you already run Caddy and PostgreSQL from another Compose project, either
# merge the `schulcloud-mcp` service below into that project's file, or keep
# this file separate and attach it to the existing Caddy network — see the
# `networks` block at the bottom and deploy/Caddyfile.snippet.

services:
  # Dev/standalone Postgres. On the Pi, point DATABASE_URL at the existing
  # instance instead and remove this service — the schema lives in its own
  # database and user, so it coexists with whatever else is already there.
  postgres:
    image: postgres:17-alpine
    container_name: schulcloud-mcp-db
    restart: unless-stopped
    environment:
      POSTGRES_DB: schulcloud
      POSTGRES_USER: schulcloud
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-schulcloud}
    volumes:
      - pgdata:/var/lib/postgresql/data
    networks:
      - caddy
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U schulcloud -d schulcloud"]
      interval: 10s
      timeout: 5s
      retries: 5

  schulcloud-mcp:
    build: .
    image: schulcloud-mcp:latest
    container_name: schulcloud-mcp
    restart: unless-stopped
    env_file: .env
    environment:
      PORT: 8080
      BIND_HOST: 0.0.0.0
      MIRROR_DIR: /data/mirror
      STATE_DIR: /data/state
    depends_on:
      postgres:
        condition: service_healthy
    volumes:
      # The mirror and a replaced Schulcloud token are the only things this
      # server writes; everything else stays read-only, so each gets its own
      # volume rather than loosening read_only.
      - mirror:/data/mirror
      - state:/data/state
    # No ports are published to the host: Caddy reaches the container over the
    # shared Docker network, so the only way in from the internet is through
    # Caddy's TLS and this server's bearer check.
    expose:
      - "8080"
    networks:
      - caddy
    logging:
      driver: json-file
      options:
        max-size: "10m"
        max-file: "3"
    security_opt:
      - no-new-privileges:true
    read_only: true
    tmpfs:
      - /tmp
    cap_drop:
      - ALL

volumes:
  pgdata:
  mirror:
  state:

networks:
  caddy:
    # Set to true once this joins the network your existing Caddy already uses,
    # and change the name to match (`docker network ls` to find it).
    external: false
    name: caddy