beetlex-core update .net core to v3.0 (#5006)

* docker add COMPlus_ReadyToRun variable
update beetlex

* update beetlex, enabled thread queue

* beetlex framework add db and queries cases

* add db code

* change result json data

* update query url

* beetlex framework add fortunes cases

* change Content-Type

* add beetlex core cases

* fix queries cases

* update config

* change try readline

* update benchmark config

* Update README.md

* Update README.md

* change versus property

* beetlex-core update .net core to v3.0

* change beetlex-core project file

frameworks/CSharp/beetlex/PlatformBenchmarks/PlatformBenchmarks.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.2</TargetFramework>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
     <ServerGarbageCollection>true</ServerGarbageCollection>
     <LangVersion>7.2</LangVersion>
   </PropertyGroup>

frameworks/CSharp/beetlex/beetlex-core.dockerfile

@@ -1,9 +1,9 @@
-FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build
+FROM mcr.microsoft.com/dotnet/core/sdk:3.0 AS build
 WORKDIR /app
 COPY PlatformBenchmarks .
 RUN dotnet publish -c Release -o out
 
-FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS runtime
+FROM mcr.microsoft.com/dotnet/core/aspnet:3.0 AS runtime
 ENV COMPlus_ReadyToRun 0
 WORKDIR /app
 COPY --from=build /app/out ./