[8.18] (backport #9094) Mount Go build cache into crossbuild container #9959
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* Mount Go build cache into crossbuild container * Run crossbuild container as host user * Update dev-tools/mage/crossbuild.go Co-authored-by: Victor Martinez <victormartinezrubio@gmail.com> * Fix formatting * Control mounting mod cache with env variable * Control mounting build cache with env variable * Use a volume for Go build cache --------- Co-authored-by: Victor Martinez <victormartinezrubio@gmail.com> (cherry picked from commit fd4de6b)
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What does this PR do?
Mounts the Go build cache into the golang-crossbuild container. To facilitate this and allow the container to generate the build cache, it also changes the crossbuild container to run as the host user.
This has been tested locally on both Mac and Linux, and the CI passes for this PR. It probably requires somewhat more careful testing, as permission changes in the host build cache could potentially result in breakage for unified releases.
Why is it important?
This reduces the build time of agent during packaging by around 75%. On my machine, the same-architecture build goes from 2 minutes to 25 seconds.
Checklist
[ ] I have made corresponding changes to the documentation[ ] I have made corresponding change to the default configuration files[ ] I have added tests that prove my fix is effective or that my feature works[ ] I have added an entry in./changelog/fragmentsusing the changelog tool[ ] I have added an integration test or an E2E testHow to test this PR locally
Run
mage crossbuildand time it.Related issues
This is an automatic backport of pull request #9094 done by [Mergify](https://mergify.com).