Override entrypoint in docker compose

In the example below I'm overriding the entrypoint for the blakcbox exporter in order to add verbose logging

version: '3'
services:
  prom:
    build: ./server
    ports:
      - "9090:9090"

  blackbox:
    build: ./blackbox
    ports:
      - "9115:9115"
    entrypoint:
    - /bin/blackbox_exporter
    - --config.file=/etc/blackbox_exporter/config.yml
    - --log.level=debug

  app:
    build: ./app
    ports:
      - "3000:3000"

  grafana:
    image: grafana/grafana
    ports:
      - "8000:3000"