clone step fails on self hosted runners

[jgstew]

The following step fails on self hosted runners in subsequent runs:

gh-actions-lua/main.js

Lines 101 to 103 in 8aace34

	await exec.exec(`git clone --branch ${repo.branch} --single-branch ${repo.url}`, undefined, {
	cwd: buildPath
	})

Gives the following error message:

Notice: gh-actions-lua: No cache available, clean build
/usr/bin/git clone --branch v2.1 --single-branch https://github.com/luajit/luajit.git
fatal: destination path 'luajit' already exists and is not an empty directory.

This happens when the repo was already cloned in a previous run and is still in the runner temp directory.

It seems like the folder given by the following should be deleted if it exists just before the GIT clone step:

path.join(process.env["RUNNER_TEMP"], BUILD_PREFIX, baseDir)

[jgstew]

Seems like this could be the fix?:

  // delete folder before cloning in case it exists
  const folderPathClone = path.join(buildPath, baseDir);
  try {
    await fsp.rm(folderPathClone, { recursive: true, force: true });
    console.log(`Folder and its contents deleted: ${folderPathClone}`);
  } catch (error) {
    console.error(`Error deleting folder: ${error.message}`);
  }

Working on testing this.

There also might be a solution that would be more efficient to reuse the existing cloned folder by doing a pull, but would need something more complicated to make sure it is using the desired repo because more than one repo could be using this same folder.

[jgstew]

Tested this successfully:

Folder and its contents deleted: /home/runner_user/Applications/actions-runner/_work/_temp/.lua-build/luajit