couch-rules-engine/docker-compose.yml at main · mheadd/couch-rules-engine · GitHub

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services:
  couchdb:
    # Pin to specific version for reproducibility and security
    image: couchdb:3.5.1
    container_name: couchdb-rules-engine
    environment:
      - COUCHDB_USER=admin
      - COUCHDB_PASSWORD=password
      - COUCHDB_SECRET=mysecret
    ports:
      - "5984:5984"
    volumes:
      - couchdb_data:/opt/couchdb/data
      - couchdb_config:/opt/couchdb/etc/local.d
    # Security hardening for CouchDB container
    # Note: CouchDB entrypoint requires privilege escalation to switch users
    # so we cannot use no-new-privileges or cap_drop without breaking startup
    # Resource limits to prevent resource exhaustion attacks
    deploy:
      resources:
        limits:
          memory: 512M
          cpus: '1.0'
        reservations:
          memory: 256M
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:5984/_up"]
      interval: 30s
      timeout: 10s
      retries: 5
    networks:
      - rules-engine-network

  web-interface:
    build:
      context: ./web
      dockerfile: Dockerfile
    container_name: rules-engine-web
    ports:
      # DHI nginx listens on 8080 internally (non-root)
      - "8080:8080"
    depends_on:
      couchdb:
        condition: service_healthy
    environment:
      - COUCHDB_URL=http://couchdb:5984
      - COUCHDB_DATABASE=rules_db
    # Security hardening for web interface
    security_opt:
      - no-new-privileges:true
    cap_drop:
      - ALL
    cap_add:
      - CHOWN
      - SETGID
      - SETUID
    read_only: true
    tmpfs:
      - /tmp:noexec,nosuid,size=32m
      - /var/cache/nginx:size=32m
      - /var/run:noexec,nosuid,size=16m
    deploy:
      resources:
        limits:
          memory: 128M
          cpus: '0.5'
    networks:
      - rules-engine-network
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/"]
      interval: 30s
      timeout: 10s
      retries: 3

  initializer:
    build:
      context: .
      dockerfile: Dockerfile.initializer
    container_name: rules-engine-initializer
    depends_on:
      couchdb:
        condition: service_healthy
    environment:
      - COUCHDB_URL=http://couchdb:5984
      - COUCHDB_USER=admin
      - COUCHDB_PASSWORD=password
      - DB_NAME=rules_db
    # Security hardening for initializer (runs once and exits)
    security_opt:
      - no-new-privileges:true
    cap_drop:
      - ALL
    deploy:
      resources:
        limits:
          memory: 128M
          cpus: '0.5'
    networks:
      - rules-engine-network
    restart: "no"

volumes:
  couchdb_data:
  couchdb_config:

networks:
  rules-engine-network:
    driver: bridge