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perf: speed up action downloads (#1209)

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An action pinned to a full commit hash cloned the whole repository, and a cached one hit the network on every run. Now only the pinned commit is fetched at depth 1, a cached commit is reused with no network at all, and the action's `.git` directory no longer ships into the job container, matching GitHub.

```
repo                  cold ms         warm ms       cache KiB
actions/checkout      5807 → 787    1064 → 12    11492 → 2349
actions/setup-node   15257 → 1013   1365 → 21    64303 → 9924
actions/cache        18782 → 760    1589 → 16    60890 → 12507
actions/setup-go      5513 → 764     589 → 20    16600 → 9104
docker/login-action  25809 → 1225   1288 → 10    81709 → 12503
```

Reviewed-on: https://gitea.com/gitea/runner/pulls/1209
Reviewed-by: bircni <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
silverwind
2026-09-05 08:52:10 +00:00
committed by bircni
parent 1745c7c841
commit c158ac5472
13 changed files with 255 additions and 67 deletions
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act/container/host_environment_test.go
+23 -1
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@@ -47,10 +47,32 @@ func TestCopyDir(t *testing.T) {
_ = os.MkdirAll(e.TmpDir, 0o700)
_ = os.MkdirAll(e.ToolCache, 0o700)
_ = os.MkdirAll(e.ActPath, 0o700)
err := e.CopyDir(e.Workdir, e.Path, true)(ctx)
err := e.CopyDir(e.Workdir, e.Path, true, false)(ctx)
assert.NoError(t, err)
}
func TestCopyDirSkipGitDir(t *testing.T) {
for name, skipGitDir := range map[string]bool{"kept for a workspace copy": false, "skipped for an action copy": true} {
t.Run(name, func(t *testing.T) {
src := filepath.Join(t.TempDir(), "action")
require.NoError(t, os.MkdirAll(filepath.Join(src, ".git", "objects"), 0o700))
require.NoError(t, os.WriteFile(filepath.Join(src, ".git", "objects", "pack"), []byte("x"), 0o600))
require.NoError(t, os.WriteFile(filepath.Join(src, "action.yml"), []byte("name: x\n"), 0o600))
dest := filepath.Join(t.TempDir(), "dest")
e := &HostEnvironment{StdOut: os.Stdout}
require.NoError(t, e.CopyDir(dest, src+string(filepath.Separator), false, skipGitDir)(context.Background()))
assert.FileExists(t, filepath.Join(dest, "action.yml"))
if skipGitDir {
assert.NoDirExists(t, filepath.Join(dest, ".git"))
} else {
assert.FileExists(t, filepath.Join(dest, ".git", "objects", "pack"))
}
})
}
}
func TestGetContainerArchive(t *testing.T) {
dir := t.TempDir()
ctx := context.Background()