我了解使用多阶段构建的目的,但我不明白您为什么想要这样的空阶段?有人可以详细说明用例吗?
# Use an official Ubuntu 18.04 as parent image
FROM ubuntu:18.04
# Install python 2.7
FROM python:2.7
RUN apt-get update
RUN apt-get install -y git make g++
# more stuff, nothing using layer 0.
来源:https ://raw.githubusercontent.com/kubeflow/examples/master/xgboost_ames_housing/Dockerfile