Benchmark Client docker container build errors when running

[L2]

The steps for building and running the benchmarking client docker container as shown in the repo's main readme:

Setup the Benchmark Client
Clone https://github.com/aspnet/benchmarks on the main branch
Run cd docker/benchmarks
Run ./build.sh, which will build a Docker image containing the benchmarking dependencies
Then run ./run-client.sh
The application should start on port 5002. Open a browser on this page and OK should be displayed.

Performing these steps and executing ./run-client.sh results in the container continuously rebooting. The docker logs for the benchmark-client container show the following lines repeated:

/benchmarks/src/BenchmarksClient/BenchmarksClient.csproj : error NU1101: Unable to find package Microsoft.DiaSymReader.Pdb2Pdb. No packages exist with this id in source(s): dotnet-public, dotnet5, dotnet5-transport, dotnet6
/benchmarks/src/BenchmarksClient/BenchmarksClient.csproj : error NU1605: Detected package downgrade: Microsoft.AspNetCore.SignalR.Protocols.MessagePack from 5.0.0-alpha.1.19614.7 to 3.1.0-preview2.19528.8. Reference the package directly from the project to select a different version.
/benchmarks/src/BenchmarksClient/BenchmarksClient.csproj : error NU1605:  BenchmarksClient -> Ignitor 5.0.0-alpha.1.19614.7 -> Microsoft.AspNetCore.SignalR.Protocols.MessagePack (>= 5.0.0-alpha.1.19614.7)
/benchmarks/src/BenchmarksClient/BenchmarksClient.csproj : error NU1605:  BenchmarksClient -> Microsoft.AspNetCore.SignalR.Protocols.MessagePack (>= 3.1.0-preview2.19528.8)

The build failed. Fix the build errors and run again.

I'm running Ubuntu 18.04 and I've also tried docker system prune -af and rebuilding again.

Thanks