[Nixpacks] Trouble with .net 8 and the Web API template.

> [8/9] RUN  dotnet publish --no-restore -c Release -o out:                                                                                                                                                                                               
0.212 MSBuild version 17.7.0-preview-23281-03+4ce2ff1f8 for .NET                                                                                                                                                                                            
0.374 /nix/store/r6yspcqpmvjdyvysj5rj7w40xm93g869-dotnet-sdk-8.0.100-preview.5.23303.2/sdk/8.0.100-preview.5.23303.2/Current/SolutionFile/ImportAfter/Microsoft.NET.Sdk.Solution.targets(36,5): warning NETSDK1194: The "--output" option isn't supported when building a solution. Specifying a solution-level output path results in all projects copying outputs to the same directory, which can lead to inconsistent builds. [/app/WebApplication1.sln]                                                           
0.553 /nix/store/r6yspcqpmvjdyvysj5rj7w40xm93g869-dotnet-sdk-8.0.100-preview.5.23303.2/sdk/8.0.100-preview.5.23303.2/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.RuntimeIdentifierInference.targets(314,5): message NETSDK1057: You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy [/app/WebApplication1/WebApplication1.csproj]
0.646 /nix/store/r6yspcqpmvjdyvysj5rj7w40xm93g869-dotnet-sdk-8.0.100-preview.5.23303.2/sdk/8.0.100-preview.5.23303.2/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): error NETSDK1064: Package Microsoft.AspNetCore.OpenApi, version 8.0.7 was not found. It might have been deleted since NuGet restore. Otherwise, NuGet restore might have only partially completed, which might have been due to maximum path length restrictions. [/app/WebApplication1/WebApplication1.csproj]
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> [8/9] RUN  dotnet publish --no-restore -c Release -o out:                                                                                                                                                                                               
0.212 MSBuild version 17.7.0-preview-23281-03+4ce2ff1f8 for .NET                                                                                                                                                                                            
0.374 /nix/store/r6yspcqpmvjdyvysj5rj7w40xm93g869-dotnet-sdk-8.0.100-preview.5.23303.2/sdk/8.0.100-preview.5.23303.2/Current/SolutionFile/ImportAfter/Microsoft.NET.Sdk.Solution.targets(36,5): warning NETSDK1194: The "--output" option isn't supported when building a solution. Specifying a solution-level output path results in all projects copying outputs to the same directory, which can lead to inconsistent builds. [/app/WebApplication1.sln]                                                           
0.553 /nix/store/r6yspcqpmvjdyvysj5rj7w40xm93g869-dotnet-sdk-8.0.100-preview.5.23303.2/sdk/8.0.100-preview.5.23303.2/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.RuntimeIdentifierInference.targets(314,5): message NETSDK1057: You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy [/app/WebApplication1/WebApplication1.csproj]
0.646 /nix/store/r6yspcqpmvjdyvysj5rj7w40xm93g869-dotnet-sdk-8.0.100-preview.5.23303.2/sdk/8.0.100-preview.5.23303.2/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): error NETSDK1064: Package Microsoft.AspNetCore.OpenApi, version 8.0.7 was not found. It might have been deleted since NuGet restore. Otherwise, NuGet restore might have only partially completed, which might have been due to maximum path length restrictions. [/app/WebApplication1/WebApplication1.csproj]
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