pre-commit requires preview sdk

Reproduce steps:

1. Make sure there is no net6-preview sdk installed globally
2. Use following .pre-commit-config.yaml

repos:
-   repo: https://github.com/dotnet/format
    rev: "v5.1.225507"  # Specify a tag or sha here, or run "pre-commit autoupdate"
    hooks:
    -   id: dotnet-format

1. Type pre-commit run

Expected result:

Everything fine

Actual result:

Could not execute because the application was not found or a compatible .NET SDK is not installed.
    Possible reasons for this include:
      * You intended to execute a .NET program:
          The application 'pack' does not exist.
      * You intended to execute a .NET SDK command:
          A compatible installed .NET SDK for global.json version [6.0.100-preview.1.21103.13] from [C:\Users\leo\.cache\pre-commit\repo5e5uh95j\global.json] was not found.
          Install the [6.0.100-preview.1.21103.13] .NET SDK or update [C:\Users\leo\.cache\pre-commit\repo5e5uh95j\global.json] with an installed .NET SDK:

[leotsarev]

After investigation, another option will be just use pre-commit “local” mode to use dotnet format installed as local tool / part of sdk and skip downloading at all.

I’ll update integrations.md with info about this option. PR will follow 😃

[JoeRobich]

Hi @leotsarev, You seem to have run into the same issue as https://github.com/dotnet/format/issues/1318.

I think pre-commit dotnet integration should have mode to use dotnet-tools.json

I agree. I thought it was an interesting choice to build our tool locally when running pre-commit. We welcome pull requests to make this experience better.