如何让LaraDock使用yum而不是apt-get?

docker-compose up -d nginx mysql

问题是我遇到以下错误:

E: There were unauthenticated packages and -y was used without --allow-unauthenticated
ERROR: Service 'workspace' failed to build: The command '/bin/sh -c apt-get update -yqq     && apt-get -yqq install nasm' returned a non-zero code: 100`

有没有办法让它使用yum而不是apt-get?

(我是一个服务器noob,以为docker会很容易,似乎是这样。只是不明白为什么要用apt-get代替yum。谢谢。)