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docker-compose.yml

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+services:
+
+  # ── MQTT Broker ──────────────────────────────────────────────────
+  mqtt:
+    image: eclipse-mosquitto:2
+    container_name: dcim_mqtt
+    restart: unless-stopped
+    ports:
+      - "1883:1883"
+    volumes:
+      - ./infra/mosquitto/mosquitto.conf:/mosquitto/config/mosquitto.conf:ro
+    healthcheck:
+      test: ["CMD-SHELL", "mosquitto_sub -t '$$SYS/#' -C 1 -i healthcheck -W 3"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  # ── PostgreSQL + TimescaleDB ─────────────────────────────────────
+  db:
+    image: timescale/timescaledb:latest-pg16
+    container_name: dcim_db
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: dcim
+      POSTGRES_PASSWORD: dcim_pass
+      POSTGRES_DB: dcim
+    ports:
+      - "5433:5432"   # host 5433 → container 5432 (avoids conflict with existing Postgres)
+    volumes:
+      - db_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U dcim -d dcim"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  # ── FastAPI backend ──────────────────────────────────────────────
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: dcim_backend
+    restart: unless-stopped
+    env_file:
+      - ./backend/.env
+    environment:
+      DATABASE_URL: postgresql+asyncpg://dcim:dcim_pass@db:5432/dcim
+      MQTT_HOST: mqtt
+      MQTT_PORT: "1883"
+    ports:
+      - "8000:8000"
+    depends_on:
+      db:
+        condition: service_healthy
+      mqtt:
+        condition: service_healthy
+    volumes:
+      - ./backend:/app
+    command: uvicorn main:app --host 0.0.0.0 --port 8000 --reload
+    healthcheck:
+      test: ["CMD-SHELL", "curl -sf http://localhost:8000/api/health || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 10
+      start_period: 20s
+
+  # ── Simulator bots (seed first, then run bots) ───────────────────
+  simulators:
+    build:
+      context: ./simulators
+      dockerfile: Dockerfile
+    container_name: dcim_simulators
+    restart: unless-stopped
+    environment:
+      MQTT_HOST: mqtt
+      MQTT_PORT: "1883"
+      DATABASE_URL: postgresql://dcim:dcim_pass@db:5432/dcim
+      SEED_MINUTES: "30"
+    depends_on:
+      db:
+        condition: service_healthy
+      mqtt:
+        condition: service_healthy
+      backend:
+        condition: service_healthy
+    volumes:
+      - ./simulators:/app
+
+  # ── Next.js frontend ─────────────────────────────────────────────
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    container_name: dcim_frontend
+    restart: unless-stopped
+    env_file:
+      - ./frontend/.env.local
+    ports:
+      - "5646:5646"
+    depends_on:
+      - backend
+    environment:
+      PORT: "5646"
+      BACKEND_INTERNAL_URL: http://backend:8000
+
+volumes:
+  db_data: