upgrade to dotnet 8

c#/dockerfile

@@ -1,28 +1,27 @@
-FROM mcr.microsoft.com/dotnet/core/sdk:2.2-stretch as debug
+FROM mcr.microsoft.com/dotnet/sdk:8.0 as build
 
 #install debugger for NET Core
 RUN apt-get update
 RUN apt-get install -y unzip
 RUN curl -sSL https://aka.ms/getvsdbgsh | /bin/sh /dev/stdin -v latest -l ~/vsdbg
 
-RUN mkdir /work/
-WORKDIR /work/
+RUN mkdir /src/
+WORKDIR /src/
 
-COPY ./src/work.csproj /work/work.csproj
+COPY ./src/helloworld.csproj /src/helloworld.csproj
 RUN dotnet restore
 
-COPY ./src/ /work/
+COPY ./src/ /src/
 RUN mkdir /out/
-RUN dotnet publish --no-restore --output /out/ --configuration Release
+
+RUN dotnet build helloworld.csproj --configuration Debug --no-restore
+RUN dotnet publish helloworld.csproj --output /out --configuration Debug --no-restore
 
 ENTRYPOINT ["dotnet", "run"]
 
-###########START NEW IMAGE###########################################
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 as runtime
 
-FROM mcr.microsoft.com/dotnet/core/aspnet:2.2-stretch-slim as prod
+WORKDIR /app
+COPY --from=build /out/ /app
 
-RUN mkdir /app/
-WORKDIR /app/
-COPY --from=debug /out/ /app/
-RUN chmod +x /app/ 
-CMD dotnet work.dll
+ENTRYPOINT ["dotnet", "helloworld.dll"]

c#/src/Program.cs

@@ -1,25 +1,26 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.Logging;
 
-namespace work
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+builder.Services.Configure<HostOptions>(builder.Configuration.GetSection("HostOptions"));
+
+builder.WebHost.ConfigureKestrel(serverOptions =>
 {
-    public class Program
-    {
-        public static void Main(string[] args)
-        {
-            CreateWebHostBuilder(args).Build().Run();
-        }
+    serverOptions.ListenAnyIP(5000);
+});
 
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)
-                .UseUrls("http://*:5000")
-                .UseStartup<Startup>();
-    }
-}
+var app = builder.Build();
+
+Console.WriteLine(Environment.ProcessorCount.ToString());
+
+app.UseHttpsRedirection();
+
+app.MapGet("/", async () =>
+{
+    await Task.Delay(40000); // Sleep for 40 seconds
+    return "Hello World!";
+});
+
+app.Run();

c#/src/appsettings.Development.json

@@ -1,9 +1,8 @@
 {
   "Logging": {
     "LogLevel": {
-      "Default": "Debug",
-      "System": "Information",
-      "Microsoft": "Information"
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
     }
   }
 }

c#/src/helloworld.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
+  </ItemGroup>
+
+</Project>