Go Proxy Configuration

[bradfordwagner]

In a corporate setting we use Artifactory to as a pull through for go packages. In order for it to work GOPROXY, GONOPROXY, GOSUMDB, GONOSUMDB, and GOPRIVATE need to be configurable.

Describe the Enhancement

Set GOPROXY, GONOPROXY, GOSUMDB, GONOSUMDB, and GOPRIVATE in a build pipeline/locally and run pack build image with the env variables seamlessly passing to go mod vendor.

Possible Solution

Motivation

In a corporate setting network requests can be man-in-the-middled by security software. Requests for go packages need to use go_proxy

[bradfordwagner]

Using pack build -e GOPROXY=... solved this
You can also bake it into project.toml if you want: https://github.com/buildpacks/spec/blob/main/extensions/project-descriptor.md#iobuildpacksbuildenv-optional