go - Gitlab CI - Auto DevOps 作业失败，无法为 Go 项目选择构建包？

Question

我的 Gitlab CI Auto DevOps 作业失败了

Status: Downloaded newer image for gliderlabs/herokuish:latest
       -----> Unable to select a buildpack
ERROR: Job failed: exit code 1

我经历过

• Auto DevOps和
• Getting started with Auto DevOps

我仍然不确定我应该把 buildpack 放在哪里。

我的应该是 heroku-buildpack-go，我已经忘记从哪里得到它了。

我的 repo 仅包含一个单字符 README.md 和“Hello, playground” main.go。

结论:

感谢 David 的全面解释，我能够使用正确的构建包开始 DevOps:

From this I would conclude that your single .go file at the root of the directory tree does not meet the activation criteria for auto-building Go projects. I'd suggest picking one of the dependency managers in the requirements above and modifying your project to support it.

FTA，我只是做了 touch go.mod 然后是 git add & git push AutoDevops 确实开始构建我的 GO 项目。

但是在我看来，Gitlab AutoDevops 无法非常轻松地构建任何 GO 项目，因为我收到以下错误(项目变量 TRACE=true):

...
        !!    The go.mod file for this project does not specify a Go version
        !!    
        !!    Defaulting to go1.11.1
        !!    
        !!    For more details see: https://devcenter.heroku.com/articles/go-apps-with-modules#build-configuration
        !!    
-----> Installing go1.11.1
-----> Fetching go1.11.1.linux-amd64.tar.gz... done
        !!    Installing package '.' (default)
        !!    
        !!    To install a different package spec add a comment in the following form to your `go.mod` file:
        !!    // +heroku install ./cmd/...
        !!    
        !!    For more details see: https://devcenter.heroku.com/articles/go-apps-with-modules#build-configuration
        !!    
-----> Running: go install -v -tags heroku .
       go: cannot determine module path for source directory /tmp/build (outside GOPATH, no import comments)
ERROR: Job failed: exit code 1

更简单的解决方案是使用 .gitlab-ci.yml 文件，记录在
https://blog.boatswain.io/post/build-go-project-with-gitlab-ci/
(并在 Gitlab CI - Start Shared Runner for normal repos 跟进)。

Answer 1

来自AutoDevops documentation :

Auto Build creates a build of the application in one of two ways:

• If there is a Dockerfile, it will use docker build to create a Docker image.
• Otherwise, it will use Herokuish and Heroku buildpacks to automatically detect and build the application into a Docker image.

然后根据 Heroku Go buildpack 查看构建激活标准文档:

This buildpack will detect your repository as Go if you are using either:

• go modules
• dep
• govendor
• glide
• GB
• Godep

或more specifically for godep, govendor or GB :

The Heroku Go buildpack is used when an application meets one of the following requirements:

• has a Godeps/Godeps.json file, identifying the application as being managed by godep;
• has a vendor/vendor.json file, identifying the application as being managed by govendor;
• has a src directory, which has sub directories, contains one or more .go files, identifying the application as being managed by gb.

由此我可以得出结论，目录树根目录下的单个 .go 文件不符合自动构建 Go 项目的激活条件。我建议在上述要求中选择一个依赖管理器并修改您的项目以支持它。之后 AutoDevops 应该开始构建您的项目。

如果在那之后您仍然遇到问题，这 debugging note可能有帮助:

After making sure that the project meets the buildpack requirements; if it still fails, setting a project variable TRACE=true will enable verbose logging which​ may help to continue troubleshooting.