如何为Docker Alpine映像构建静态Go二进制文件？ [英] How do I build a static Go binary for the Docker Alpine image?

问题描述

我想构建一个Go 1.9.2二进制文件并在Docker Alpine映像上运行它。我编写的Go代码不会调用任何C代码。它还使用 net 软件包。不幸的是，它并没有听起来那么简单，因为Go似乎并非一直都在构建静态二进制文件。当我尝试执行二进制文件时，我经常会收到有关为什么二进制文件未执行的隐秘消息。互联网上有很多关于此的信息，但大多数最终导致人们使用试用版错误来使二进制文件正常工作。

I want to build a Go 1.9.2 binary and run it on the Docker Alpine image. The Go code I wrote doesn't call any C code. It also uses the net package. Unfortunately it hasn't been as simple as it sounds as Go doesn't seem to quite build static binaries all the time. When I try to execute the binary I often get cryptic messages for why the binary didn't execute. There's quite a bit of information on the internet about this but most of it ends up with people using trial an error to make their binaries work.

到目前为止，我已经找到了以下作品，但是我不知道为什么，是最佳选择还是可以简化。

So far I have found the following works, however I don't know why, if it is optimal or if it could be simplified.

env GOOS=linux GARCH=amd64 go install -v -a -tags netgo -installsuffix netgo -ldflags "-linkmode external -extldflags -static"

构建可以在Alpine 3.7 docker映像上运行的Go二进制文件的规范方法（如果存在）是什么？我很高兴使用 apk 将软件包安装到Alpine映像中，如果这样做会使事情更高效/更容易。 （相信我仍然需要安装 ca证书。）

What is the canonical way (if it exists) to build a Go binary that will run on the Alpine 3.7 docker image? I am happy to use apk to install packages to the Alpine image if that would make things more efficient/easier. (Believe I need to install ca-certificates anyway.)

推荐答案

是的，您经常需要添加证书之类的额外资源文件，尤其是在使用像alpine这样的最小发行版时，但是您通常可以在这样小的发行版上运行go应用程序这一事实也被视为一种优势。

Yes, you often need to add extra resource files like certificates especially when using a minimal distribution like alpine but the fact that you can run go applications on such small distributions is often also seen as an advantage.

要添加证书，这是一个很好的说明，概述了如何在临时容器上进行操作：

To add the certificates this is a really good explanation outlining how to do it on a scratch container:

https://blog.codeship.com/building-minimal-docker-containers-for-go- Applications /

如果您更喜欢高山，那么可以安装此软件包以获取它们：

If you would rather stick with alpine then you can install this package to get them:

https://pkgs.alpinelinux.org/package /v3.7/main/x86/ca-certificates

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