runs on 2.1, no code changed

src/ClientServer/ClientServer.csproj

 <Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
-    <TargetFramework>netcoreapp1.0</TargetFramework>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
     <PreserveCompilationContext>true</PreserveCompilationContext>
     <AssemblyName>ClientServer</AssemblyName>
     <OutputType>Exe</OutputType>
     <PackageId>ClientServer</PackageId>
-    <RuntimeFrameworkVersion>1.1.11</RuntimeFrameworkVersion>
     <RuntimeIdentifiers>debian.9-x64</RuntimeIdentifiers>
-    <PackageTargetFallback>$(PackageTargetFallback);dotnet5.6;dnxcore50;portable-net45+win8</PackageTargetFallback>
+    <AssetTargetFallback>$(PackageTargetFallback);dotnet5.6;dnxcore50;portable-net45+win8</AssetTargetFallback>
   </PropertyGroup>
   <ItemGroup>
     <None Update="wwwroot\**\*;Views">
@@ -16,32 +15,33 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="CsvHelper" Version="2.16.3" />
-    <PackageReference Include="Microsoft.AspNetCore.Cors" Version="1.0.2" />
-    <PackageReference Include="System.IO.Compression" Version="4.1.0" />
-    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="1.0.0" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="1.0.3" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.0.0" />
-    <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.0.2" />
-    <PackageReference Include="Microsoft.AspNetCore.Diagnostics" Version="1.0.2" />
-    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="1.0.2" />
-    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.0.2" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.0.3" />
+    <PackageReference Include="Microsoft.AspNetCore.Cors" Version="2.1" />
+    <PackageReference Include="System.IO.Compression" Version="4.3.0" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="2.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="2.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Diagnostics" Version="2.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="2.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="2.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.1" />
     <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration.Tools" Version="1.0.0-preview2-final" />
-    <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="1.0.3" />
-    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.0.2" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="1.0.2" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="1.0.2" />
-    <PackageReference Include="Microsoft.Extensions.Logging" Version="1.0.2" />
+    <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="2.1" />
+    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="2.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.1" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="2.1" />
     <PackageReference Include="Microsoft.Extensions.PlatformAbstractions" Version="1.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Localization" Version="1.0.2" />
-    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="1.0.2" />
-    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.0.2" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="1.0.2" />
-    <PackageReference Include="Microsoft.AspNetCore.Session" Version="1.0.2" />
+    <PackageReference Include="Microsoft.Extensions.Localization" Version="2.1" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="2.1" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="2.1" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="2.1" />
+    <PackageReference Include="Microsoft.AspNetCore.Session" Version="2.1" />
     <PackageReference Include="System.Reactive" Version="3.0.0" />
-    <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="1.0.2" />
+    <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="2.1" />
     <PackageReference Include="BCrypt.Net-Core" Version="1.0.2" />
-    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="5.0.0" />
+    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="5.2.0" />
   </ItemGroup>
   <ItemGroup>
     <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.0" />