Actions cache does not actually work

[davhdavh]

Describe the bug

runner/src/Runner.Common/HostContext.cs

Lines 280 to 283 in edfdbb9

	case WellKnownDirectory.Actions:
	path = Path.Combine(
	GetDirectory(WellKnownDirectory.Work),
	Constants.Path.ActionsDirectory);

Specifies that the actions cache is a subfolder of the work folder, but the work folder is always totally reset.

To Reproduce
Steps to reproduce the behavior:

1. Run a workflow that uses any action -> observe in the "Set up Job" part of the run that it downloads the action(s)
   (ie, the text from

   runner/src/Runner.Worker/ActionManager.cs

   Line 778 in edfdbb9

   executionContext.Output($"Download action repository '{downloadInfo.NameWithOwner}@{downloadInfo.Ref}' (SHA:{downloadInfo.ResolvedSha})");

   )
2. Run same work -> observe in the "Set up Job" part of the run that it downloads the action(s)

Expected behavior

1. same
2. Action is already downloaded -> ie, the text from

   runner/src/Runner.Worker/ActionManager.cs

   Line 770 in edfdbb9

   executionContext.Debug($"Action '{downloadInfo.NameWithOwner}@{downloadInfo.Ref}' already downloaded at '{destDirectory}'.");

Runner Version and Platform

latest, any os

Job Log Output

Download action repository 'actions/upload-artifact@65462800fd760344b1a7b4382951275a0abb4808' (SHA:65462800fd760344b1a7b4382951275a0abb4808)

Suggested fix:

runner/src/Runner.Common/HostContext.cs

Line 282 in edfdbb9

GetDirectory(WellKnownDirectory.Work),

Change to .Tools instead of .Work

[davhdavh]

Anyone?