From February 2021, in order to provide feedback on pull requests, Code Scanning workflows must be configured with both `push` and `pull_request` triggers. This is because Code Scanning compares the results from a pull request against the results for the base branch to tell you only what has changed between the two.
Early in the beta period we supported displaying results on pull requests for workflows with only `push` triggers, but have discontinued support as this proved to be less robust.
See https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#scanning-pull-requests for more information on how best to configure your Code Scanning workflows.
* Change `ping .. > nul` to `sleep`
The filename `nul` is a Windows-ism that causes the update script to
create such a file in the current working directory. The `ping`
utility is also an dependency not installed by
`installdependencies.sh`, so it seemed easier to change it to the
standard `sleep` command.
* Update dotnet-install script as requested by test
* Update dotnet-install.ps1
Co-authored-by: Tingluo Huang <[email protected]>