Update .NET C# Image/Template to support & use .NET7

[warrenbuckley]

With the release of .NET7 released this week.
It makes sense if the .NET C# DevContainer template supports .NET7

https://github.com/devcontainers/templates/tree/main/src/dotnet

Currently it only supports the following

• 6.0
• 3.1
• 6.0-bullseye
• 3.1-bullseye
• 6.0-focal
• 3.1-focal

I am not sure who to ping or ask for help with this, I see the latest committer to these files is @samruddhikhandale so perhaps you can help with this?

[warrenbuckley]

I can't publicly browse the mcr.microsoft.com/devcontainers/dotnet URL,
I can only assume that there is not a prebuilt devcontainer image yet for 7.0

[samruddhikhandale]

Yes, in order to update this template we needmcr.microsoft.com/devcontainers/dotnet:7.0

Once changes in devcontainers/images#201 are merged & deployed, then I'll work on updating the template.

[warrenbuckley]

Additionally, I found the feature to add the .NET CLI
https://containers.dev/features
https://github.com/devcontainers/features/tree/main/src/dotnet

Could this be an alternative approach perhaps?

[samruddhikhandale]

Could this be an alternative approach perhaps?

It's a nice suggestion. However, for templates, we are currently following a pattern to use the images for simplicity. If necessary, we then build using Features from https://github.com/devcontainers/features. As we plan to deploy the Images by Monday, I'll quickly update the dotnet Template when images are live. It will avoid changes to the current Template.

In the meanwhile, feel free to use dotnet 7 with Feature as follows -

"features": {
    "ghcr.io/devcontainers/features/dotnet:1": {
        "version": "7"
    }
}

[samruddhikhandale]

@warrenbuckley ℹ️ You can look for all the published tags for dotnet image here

[warrenbuckley]

The feature approach works perfectly fine for me, so thanks @samruddhikhandale to install .NET7 SDK tools

I am not sure why you would not want to use a smaller/slimmer image and then use the features to get the correct SDK version you want to use. For easier maintenance ?

[samruddhikhandale]

Updated the Template with .NET 7 options as the corresponding images are live 🚀

// cc - @warrenbuckley

[warrenbuckley]

Hi @samruddhikhandale
Will the template for C# (.NET) and MS SQL be updated as well?

[samruddhikhandale]

Hi @warrenbuckley 👋

Yes, I have another PR in review to update those - #43

[samruddhikhandale]

Updated 🚀