weixin_43935079
weixin_43935079
采纳率42.9%
2019-01-03 17:53 阅读 4.1k

看到有些Ubuntu相关的Dockerfile里写的 rm -rf /var/lib/apt/lists/* 就什么意思

5

/var/lib/apt/lists/* 这个目录下的都是些什么文件,为什么每次新建Dockerfile都要删除呢?

  • 点赞
  • 写回答
  • 关注问题
  • 收藏
  • 复制链接分享

1条回答 默认 最新

  • yilliam yilliam 2019-01-05 23:19

    主要是减少最终镜像的大小。通常是可以减少21M以上。

    官方文档对此有描述:

    In addition, when you clean up the apt cache by removing /var/lib/apt/lists it reduces the image size, since the apt cache is not stored in a layer. Since the RUN statement starts with apt-get update, the package cache is always refreshed prior to apt-get install.

    https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#general-guidelines-and-recommendations

    点赞 评论 复制链接分享

相关推荐