tree 2b329e15589b360f430b615cfc50f212a7ce5ed8
parent 1a5a667667849db21b533405245239445947b7fb
author Leopold Schabel <leo@nexantic.com> 1582535230 +0100
committer Leopold Schabel <leo@nexantic.com> 1582535230 +0100

Share Go pkg cache in CI

This will decrease build times for scripts/gazelle.sh invocations, which will
otherwise re-download all modules every time.

There's likely a small risk of corrupting the shared cache, at which point it
would have to cleaned manually.

According to this GitHub issue, what we're doing is supported:
https://github.com/golang/go/issues/26794

Due to the lockfile, this also serializes builds that need to download new packages.
If this ever becomes an issue, we can create a per-working copy cache like we do for Bazel.

Test Plan:
Re-ran CI build multiple times, packages were not re-downloaded.
Build time decreased by ~5-7s.

X-Origin-Diff: phab/D374
GitOrigin-RevId: ec2f347d791f2915c5ecc04d9b67029de386aae9