小编pet*_*ltz的帖子

我有一个docker-compose.yml带有后端的Django网络应用程序.它看起来像这样:

version: '2'

services:
  db:
    image: # special image
    ports:
      - "1433:1433"
    environment:
      PASSWORD: "*********"

  web:
    build: .
    command: python manage.py runserver 0.0.0.0:8000
    ports:
      - "8000:8000"
    depends_on:
      - db

当我跑sudo docker-compose build,第一行输出说

db uses an image, skipping. 
Building web.

我需要db之前构建的图像web.

如何db首先构建图像？