Runtime: Request help in updating Github actions

[9034725985]

Context: Github Actions is a CI/CD tool.
We can run dotnet build, dotnet test and things like that there.

It is different from Gitlab where we simply say
image: mcr.microsoft.com/dotnet/core/sdk:5.0

This is not an issue, more like a help request
as Github actions currently cannot into .NET 5 as far as I can tell

Corresponding issue on Github actions:
https://github.com/actions/setup-dotnet/issues/80

Special thanks to @danmosemsft for the hint to create a new issue as opposed to a comment on https://github.com/dotnet/runtime/issues/13257

[msftbot[bot]]

Tagging @safern, @viktorhofer as an area owner

[9034725985]

Demo Github actions yaml: https://github.com/kusl/mydotnet/blob/master/.github/workflows/dotnetcore.yml

[safern]

hello @9034725985 it seems like you're implying here: https://github.com/kusl/mydotnet/blob/master/.github/workflows/dotnetcore.yml#L19 that the dotnet-version is 5.0 however that is not a valid version of the SDK.

From looking at the code in: https://github.com/actions/setup-dotnet/blob/00f2601192e8671356cd7c79a137000885fa145a/src/installer.ts#L198 it uses a json file which we update everytime we publish a new version of the dotnet-sdk.

So this seems to behave pretty much just like the UseDotNet task in AzureDevops. https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/tool/dotnet-core-tool-installer?view=azure-devops

For 5.0 the release json of available .NET SDKs is this one: https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/5.0/releases.json

So basically you need to change your dotnet-version to: 5.0.100-preview.2.20176.6 which is listed as the latest sdk in that json.

[safern]

Also, I believe if you don't want to specify a specific version, you can pass 5.x as the dotnet-version and it will install the latest sdk version listed on that json.

[safern]

Closing the issue as it has been answered, we can continue the thread if needed even if closed.

[9034725985]

Thank you @safern

Using '5.0.100-preview.2.20176.6' works but 5.x does not. It would be nice if I could use 5.x or something and it just used the latest available 5.x version. Maybe that can't happen because .NET 5 isn't released?

[safern]

Yeah I guess it doesn't work because we haven't shipped any stable version. Probably the .x feature only works with released, stable versions.

[GGG-KILLER]

I found out there's an option to make .x work with prereleases and suggested an option to enable that behavior here: https://github.com/actions/setup-dotnet/issues/105

[tygore587]

@9034725985 If you don't want to use a preview version anymore, 5.0.100 as version tag also works :) You can find the version by clicking the download link on https://dotnet.microsoft.com/download/dotnet/5.0 or use the version from the title or Full Version property for previews and release candidates. :)