Have you read my previous post about .NET 7 and the new feature of dotnet publish? I recommend reading that post because I won't cover some steps.

Preparation

1. .NET 8 SDK - When posting this, the version is a preview version.
2. Docker

Starter Project

You can try cloning from the net7.0 branch from this repository.

The changes

1. Update DockerNetExample/DockerNetExample.csproj. We update the TargetFramework to net7.0 and add ContainerBaseImage. Normally, we don't add ContainerBaseImage, but because currently still a preview version, I recommend adding it. We also can add ContainerImageTags to distinguish from the previous version.
   

   <Project Sdk="Microsoft.NET.Sdk.Web">
   
     <PropertyGroup>
       <TargetFramework>net8.0</TargetFramework>
       <Nullable>enable</Nullable>
       <ImplicitUsings>enable</ImplicitUsings>
       <ContainerImageName>docker-net-example</ContainerImageName>
       <ContainerBaseImage>mcr.microsoft.com/dotnet/aspnet:8.0-preview</ContainerBaseImage>
       <ContainerImageTags>2.0.0;latest</ContainerImageTags>
     </PropertyGroup>
   
   </Project>
   

2. Now, let's run the dotnet publish command. Command: dotnet publish --os linux --arch x64 /t:PublishContainer -c Release.

3. Checking the docker image. docker image ls

   

4. I will introduce you to a Docker Compose. If you are using Docker Desktop, you already have Docker Compose bundled. More information about Docker Compose. You can create a file docker-compose.yml.
   

   version: "3.9"
   services:
     dotnet:
       image: "docker-net-example:2.0.0"
       ports:
         - 8000:80
       environment:
         - ASPNETCORE_URLS=http://+
   

5. You can check the detailed PR here.

6. You can test using curl or other tools.

   

Thanks

If you have any feedback, feel free to share it with me in this post or raise an issue in the repository.

Repository