docker compose容器互联

使用docker-compose编排容器时,如容器之间需要互相通信,使用本地连接,需要使用容器名来代替localhost

"connection": "postgresql+psycopg2://postgres:123456@localhost/database"

连接串中的localhost需要替换成postgresql容器名

version: ''

services:
  db:
    build: ./db
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=
      - POSTGRES_DB=database
    volumes:
      - ./db/init:/docker-entrypoint-initdb.d/
    container_name: db
    restart: always
    ports:
      - "5432:5432"
  web:
    build: ./web
    restart: always
    volumes:
      - ./web/codes:/code
    ports:
      - "80:8080"
    links:
      - db
    depends_on:
      - db
    container_name: web

即

"connection": "postgresql+psycopg2://postgres:123456@db/database"