Add multistage builds (多阶段构建) Docker 17.05

[khs1994]

your OS

• Linux

  • CentOS 7

  • Ubuntu 14.04

  • Ubuntu 16.04

  • Ubuntu 17.04

  • Ubuntu 17.10

  • CoreOS

  • Debian 7.7

  • Debian 8

  • Debian 9

• macOS

• Windows 10

Docker CE Version

• 17.11 edge

• 17.09 stable

• 1.13.0

• 1.8.0

Problem description

Add multistage builds

[khs1994]

https://docs.docker.com/engine/userguide/eng-image/multistage-build/