编辑 docker-compose.yml 文件，修改以下 ports 端口为指定端口 12345

web:
image: ccr.ccs.tencentyun.com/dhuar/nginx:1.25.2
restart: always
volumes:
 - ./templates:/etc/nginx/templates
 - ./.htpasswd:/etc/nginx/.htpasswd:ro
ports:
 - "12345:4000"
 - "54321:3000"

重启docker

docker-compose down
docker-compose up