Csharp 如何修复错误System.ArgumentException：不支持关键字：'port'.在净核心

我试图创建两个扩展坞镜像:ASP.NET core和postgresq，但连接字符串无法正确识别端口.

这是docker-compose.yml号文件:

version: '3.4'


networks:
  -default:
    driver: bridge

services:
  netcoreapi:
    image: netcoreapi:latest
    depends_on:
      - "postgres_image"
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "3000:80"
    networks:
        - default
    environment:
      netcoreapiContext: "host=postgres_image;port=5432;database=gr10_db;username=gr10;password=12345678"

  postgres_image:
    image: postgres:latest
    ports:
      - "5432"
    restart: always
    volumes:
      - db_volume:/var/lib/postgresql/data
    environment:
      POSTGRES_USER: "gr10"
      POSTGRES_PASSWORD: "12345678"
      POSTGRES_DB: "gr10_db"
    networks:
       - default

volumes:
  db_volume:

这是我的appsettings.json分:

"AllowedHosts": "*",
  "ConnectionStrings": {
     "netcoreapiContext": "Server=127.0.0.1; port=5432;Database=gr10_db;Username=gr10;Password=12345678"
  }

然而，当我测试数据库时，它向我返回以下消息:

System.ArgumentException:不支持关键字:‘port’. at Microsoft.Data.Common.DbConnectionOptions.ParseInternal(Dictionary2可解析，字符串连接字符串，布尔型内建链，词典`2同义词，布尔型第一键)

如果有人能帮我们，我将不胜感激