.Net core

.NET Core to develop console or Web applications. .NET Core is a set of runtime, library and compiler components that allow you to create apps that run on Windows, macOS and Linux.

• https://www.microsoft.com/net/learn/get-started/windows

• https://en.wikipedia.org/wiki/ASP.NET_Core

• https://hub.docker.com/r/microsoft/dotnet/

• https://docs.microsoft.com/pt-pt/dotnet/core/docker/building-net-docker-images

• https://msdn.microsoft.com/en-us/library/ff361664(v=vs.110).aspx

Sample hello world

.
├── appSolution.sln
├── Dockerfile
├── myApp
│   ├── myApp.csproj
│   └── Program.cs
├── myLib
│   ├── Class1.cs
│   └── myLib.csproj
├── myLibTests
│   ├── myLibTests.csproj
│   └── UniTest1.cs

Dockerfile

FROM microsoft/dotnet:2.0-sdk
WORKDIR /app
RUN apt-get update
RUN apt-get install net-tools procps vim nano -y
RUN mkdir -p /app/myApp
RUN mkdir -p /app/myLib
RUN mkdir -p /app/myLibTests
ADD myApp/* /app/myApp/
ADD myLib/* /app/myLib/
ADD myLibTests/* /app/myLibTests/
ADD appSolution.sln /app/
RUN cd /app && dotnet clean && dotnet build
RUN cd /app/myLibTests && dotnet clean && dotnet test
CMD cd /app/myApp/ && dotnet bin/Debug/netcoreapp2.0/myApp.dll && tail -f /var/log/lastlog
#CMD  tail -f /var/log/lastlog

appSolution.sln

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 15
VisualStudioVersion = 15.0.26124.0
MinimumVisualStudioVersion = 15.0.26124.0
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "myApp", "myApp\myApp.csproj", "{5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "myLib", "myLib\myLib.csproj", "{00D6703F-2D64-4D9A-95AA-430DC38E4EC3}"
EndProject
Global
        GlobalSection(SolutionConfigurationPlatforms) = preSolution
                Debug|Any CPU = Debug|Any CPU
                Debug|x64 = Debug|x64
                Debug|x86 = Debug|x86
                Release|Any CPU = Release|Any CPU
                Release|x64 = Release|x64
                Release|x86 = Release|x86
        EndGlobalSection
        GlobalSection(SolutionProperties) = preSolution
                HideSolutionNode = FALSE
        EndGlobalSection
        GlobalSection(ProjectConfigurationPlatforms) = postSolution
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Debug|Any CPU.Build.0 = Debug|Any CPU
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Debug|x64.ActiveCfg = Debug|x64
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Debug|x64.Build.0 = Debug|x64
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Debug|x86.ActiveCfg = Debug|x86
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Debug|x86.Build.0 = Debug|x86
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Release|Any CPU.ActiveCfg = Release|Any CPU
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Release|Any CPU.Build.0 = Release|Any CPU
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Release|x64.ActiveCfg = Release|x64
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Release|x64.Build.0 = Release|x64
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Release|x86.ActiveCfg = Release|x86
                {5E009AC4-9BF5-4E1B-9C22-377AC9ECC4EB}.Release|x86.Build.0 = Release|x86
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Debug|Any CPU.Build.0 = Debug|Any CPU
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Debug|x64.ActiveCfg = Debug|x64
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Debug|x64.Build.0 = Debug|x64
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Debug|x86.ActiveCfg = Debug|x86
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Debug|x86.Build.0 = Debug|x86
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Release|Any CPU.ActiveCfg = Release|Any CPU
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Release|Any CPU.Build.0 = Release|Any CPU
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Release|x64.ActiveCfg = Release|x64
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Release|x64.Build.0 = Release|x64
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Release|x86.ActiveCfg = Release|x86
                {00D6703F-2D64-4D9A-95AA-430DC38E4EC3}.Release|x86.Build.0 = Release|x86
        EndGlobalSection
EndGlobal

myApp/Program.cs

using System;
using myLib;

namespace myApp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine( Class1.getHelloWorld() );
        }
    }
}

myApp/myApp.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <ItemGroup>
    <ProjectReference Include="..\myLib\myLib.csproj" />
  </ItemGroup>

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.0</TargetFramework>
  </PropertyGroup>

</Project>

myLib/Class1.cs

using System;

namespace myLib
{
    public class Class1
    {
        public static String getHelloWorld()
        {
            return "Hello world from library.";
        }
    }
}

myLib/myLib.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
  </PropertyGroup>

</Project>

myLibTests/UniTest1.cs

using System;
using Xunit;
using myLib;

namespace myLibTests
{
    public class UnitTest1
    {
        [Fact]
        public void Test1()
        {
            Assert.Equal("Hello world from library." , Class1.getHelloWorld() );
        }
    }
}

myLibTests/myLibTests.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>

    <IsPackable>false</IsPackable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.6.0" />
    <PackageReference Include="xunit" Version="2.3.1" />
    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
    <DotNetCliToolReference Include="dotnet-xunit" Version="2.3.1" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\myLib\myLib.csproj" />
  </ItemGroup>

</Project>

Docker commands

   1 #build image
   2 docker build -t dotnetcorehello .
   3 # execute bash in running container
   4 docker exec -it $1 bash
   5 # delete all containers
   6 docker ps -a | awk '//{print $1}' | grep  -v "CONTAINER" | xargs -i sh -c 'docker stop {};docker rm {}'
   7 # execute container using inage dotnetcorehello
   8 docker run -d  dotnetcorehello
   9 # list all containers
  10 docker ps -a