停靠-编写.yaml

version: '3.9'

services:
  web:
    env_file: .env
    build: .
    command: sh -c "alembic upgrade head && uvicorn main:app --host 0.0.0.0 --port 8000"
    volumes:
      - .:/app
    ports:
      - 8000:8000
    depends_on:
      - db
      - redis
  db:
    image: postgres:11
    volumes:
      - postgres_data:/var/lib/postgresql/data
    environment:
      - POSTGRES_USER=${DB_USER}
      - POSTGRES_PASSWORD=${DB_PASS}
      - POSTGRES_DB=${DB_NAME}
  redis:
    image: redis:6-alpine

volumes:
  postgres_data:

.环境

DB_USER='wplay'
DB_PASS='wplay'
DB_HOST=db
DB_NAME='wplay'
DB_PORT=5432

我经营码头集装箱的时候

web_1    | could not connect to server: Cannot assign requested address
web_1    |      Is the server running on host "localhost" (::1) and accepting
web_1    |      TCP/IP connections on port 5432?

我尝试更改.env DB_HOST='localhost'并添加

ports:
  - '5432:5432'

到yaml db配置，但什么都没有