Updating csharp scenario

Author: sebastienros

csharp/aspnetcore/Dockerfile

@@ -1,20 +1,19 @@
-FROM microsoft/aspnetcore
+FROM microsoft/dotnet:2.1-sdk-stretch AS build
+WORKDIR /app
 
-# install sdk
-# @see https://www.microsoft.com/net/learn/get-started/linux/debian9
-RUN apt-get -qq update
-RUN apt-get -qy install curl libunwind8 gettext apt-transport-https gnupg
-RUN curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.gpg
-RUN mv microsoft.gpg /etc/apt/trusted.gpg.d/microsoft.gpg
-RUN sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-debian-stretch-prod stretch main" > /etc/apt/sources.list.d/dotnetdev.list'
-RUN apt-get -qq update
-RUN apt-get -qy install dotnet-sdk-2.1.103 libuv1-dev
+# copy csproj and restore as distinct layers
+COPY *.csproj .
+RUN dotnet restore
 
-WORKDIR /usr/src/app
+# copy everything else and build app
+COPY . .
+RUN dotnet publish -c release -o out
 
-COPY Program.cs Startup.cs aspnetcore.csproj ./
+FROM microsoft/dotnet:2.1-aspnetcore-runtime-stretch-slim AS runtime
+WORKDIR /app
+COPY --from=build /app/out ./
 
-RUN dotnet build --configuration Release
+ENV ASPNETCORE_URLS http://*:3000
+ENV COMPlus_TieredCompilation 1
 
-EXPOSE 3000
-CMD dotnet run bin/Release/netcoreapp2.0/aspnetcore.dll
+ENTRYPOINT ["dotnet", "aspnetcore.dll"]

csharp/aspnetcore/Program.cs

@@ -1,19 +1,20 @@
 using System.IO;
+using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Logging;
 
 namespace aspnetcore
 {
-  public class Program
+    public class Program
     {
         public static void Main(string[] args)
         {
-            var host = new WebHostBuilder()
-                .UseKestrel()
-                .UseStartup<Startup>()
-                .UseUrls("http://0.0.0.0:3000")
-                .Build();
-
-            host.Run();
+            CreateWebHostBuilder(args).Build().Run();
         }
+
+        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
+            WebHost.CreateDefaultBuilder(args)
+                .ConfigureLogging(config => config.ClearProviders())
+                .UseStartup<Startup>();
     }
 }

csharp/aspnetcore/Startup.cs

@@ -1,7 +1,7 @@
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
-using Microsoft.Extensions.DependencyInjection;
 using Microsoft.AspNetCore.Routing;
+using Microsoft.Extensions.DependencyInjection;
 
 namespace aspnetcore
 {
@@ -14,22 +14,21 @@ public void ConfigureServices(IServiceCollection services)
 
         public void Configure(IApplicationBuilder app)
         {
-            var routeBuilder = new RouteBuilder(app);
-
-            routeBuilder.MapGet("", context => {
-                return context.Response.WriteAsync("");
-            });
+            app.UseRouter(routes =>
+            {
+                routes.MapGet("", context => {
+                    return context.Response.WriteAsync("");
+                });
 
-            routeBuilder.MapGet("user/{id}", context => {
-                return context.Response.WriteAsync($"{context.GetRouteValue("id")}");
-            });
+                routes.MapGet("user/{id}", context => {
+                    var id = context.GetRouteValue("id").ToString();
+                    return context.Response.WriteAsync(id);
+                });
 
-            routeBuilder.MapPost("user", context => {
-                return context.Response.WriteAsync("");
+                routes.MapPost("user", context => {
+                    return context.Response.WriteAsync("");
+                });
             });
-
-            var routes = routeBuilder.Build();
-            app.UseRouter(routes);
         }
     }
 }

csharp/aspnetcore/aspnetcore.csproj

@@ -1,10 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
+
   <PropertyGroup>
-      <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
   </PropertyGroup>
+
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore" Version="1.1.1" />
-    <PackageReference Include="Microsoft.AspNetCore.Routing" Version="1.1.2" />
+    <PackageReference Include="Microsoft.AspNetCore.App" />
   </ItemGroup>
-</Project>
+
+</Project>