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docker-compose.yml

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+# Dev/prod stack. Worker reuses the api image with a different command.
+# The ML service is intentionally a commented placeholder — it is optional
+# (graceful degradation) and lands in a later phase.
+
+services:
+  api:
+    build: .
+    command: uvicorn app.main:app --host 0.0.0.0 --port 8000
+    env_file: .env
+    environment:
+      DATABASE_URL: postgresql+asyncpg://mcma:mcma@db:5432/mcma
+      REDIS_URL: redis://redis:6379/0
+    ports:
+      - "8000:8000"
+    volumes:
+      - media:/data/media
+      - transcode_cache:/data/transcode-cache
+    depends_on:
+      db:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request,sys; sys.exit(0 if urllib.request.urlopen('http://localhost:8000/health').status==200 else 1)"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+    restart: unless-stopped
+
+  worker:
+    build: .
+    command: arq app.workers.arq_worker.WorkerSettings
+    env_file: .env
+    environment:
+      DATABASE_URL: postgresql+asyncpg://mcma:mcma@db:5432/mcma
+      REDIS_URL: redis://redis:6379/0
+    volumes:
+      - media:/data/media
+      - transcode_cache:/data/transcode-cache
+    depends_on:
+      db:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    restart: unless-stopped
+
+  db:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: mcma
+      POSTGRES_PASSWORD: mcma
+      POSTGRES_DB: mcma
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U mcma"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+  redis:
+    image: redis:7-alpine
+    command: redis-server --save 60 1 --loglevel warning
+    volumes:
+      - redisdata:/data
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+  # Reverse proxy + auto-HTTPS (enable on prod with a real domain).
+  # caddy:
+  #   image: caddy:2-alpine
+  #   ports: ["80:80", "443:443"]
+  #   volumes:
+  #     - ./Caddyfile:/etc/caddy/Caddyfile
+  #     - caddy_data:/data
+  #   depends_on: [api]
+  #   restart: unless-stopped
+
+  # ML recommendation service — OPTIONAL, added in a later phase.
+  # The backend must run fully without it (set ML_SERVICE_URL to enable).
+  # ml:
+  #   image: mcma-ml:latest
+  #   environment:
+  #     MODEL_PATH: /models
+  #   restart: unless-stopped
+
+volumes:
+  pgdata:
+  redisdata:
+  media:
+  transcode_cache:
+  # caddy_data: