create-multistage-dockerfile

Build multi-stage Dockerfiles that produce minimal production images by separating build tooling from runtime.

| Compilers | gcc, g++, rustc | Not needed | | Package managers | npm, pip, cargo | Sometimes (interpreted langs) | | Dev headers | -dev packages | Not needed | | Source code | Full source tree | Only compiled output | | Test frameworks | jest, pytest | Not needed |

The core pattern: build in a fat image, copy artifacts to a slim image.

创建多阶段 Dockerfile，将构建和运行时环境分开，以实现最少的生产映像。涵盖构建器/运行时阶段分离、工件复制、暂存/distroless/alpine 目标以及大小比较。当生产映像太大、当构建工具包含在最终映像中、当您需要从一个 Dockerfile 中分离开发和生产映像时，或者当部署到边缘或无服务器等受限环境时，请使用。 来源：pjt222/development-guides。