gitea容器内访问阿里云RDS

基于docker搭建gitea，数据库直接使用阿里云的RDS，需要修改docker-compose.yml文件，增加dns设置

version: "3"

networks:
  gitea:
    external: false

services:
  server:
    dns:
      - 100.100.2.136
      - 100.100.2.138
    image: gitea/gitea:1.21.1
    container_name: gitea
    restart: always
    networks:
      - gitea
    volumes:
      - /home/dev/docker/gitea:/data
      - /etc/timezone:/etc/timezone:ro
      - /etc/localtime:/etc/localtime:ro
    ports:
      - "3000:3000"
      - "3022:22"
    environment:
      - DISABLE_REGISTRATION=true
      - SHOW_REGISTRATION_BUTTON=false
      - ALLOW_ONLY_INTERNAL_REGISTRATION=true