Update .NET guide to .NET 10 #23729
Update .NET guide to .NET 10 #23729
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craig-osterhout
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craig-osterhout
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Thanks @brandonh6k. It looks like the v10 DHI images just dropped. Suggest updating to those, or somehow make sure the v9 build will work with the updated sample app.
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| > [Docker Hardened Images (DHIs)](https://docs.docker.com/dhi/) are minimal, secure, and production-ready container base and application images maintained by Docker. DHI images are recommended for better security—they are designed to reduce vulnerabilities and simplify compliance. | ||
| > **Note**: DHI for .NET 10 is not yet available. The following DHI example uses .NET 9. Check the [DHI catalog](https://hub.docker.com/hardened-images/catalog) for .NET 10 availability, or use the official image tab below for .NET 10. |
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It looks like 10 was just added after you drafted this.
| > **Note**: DHI for .NET 10 is not yet available. The following DHI example uses .NET 9. Check the [DHI catalog](https://hub.docker.com/hardened-images/catalog) for .NET 10 availability, or use the official image tab below for .NET 10. | |
| > [!NOTE] | |
| > | |
| > The following DHI example uses .NET 9. Check the [DHI catalog](https://hub.docker.com/hardened-images/catalog) for .NET 10 availability, or use the official image tab below for .NET 10. |
| ```dockerfile {title=Dockerfile} | ||
| # syntax=docker/dockerfile:1 | ||
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| FROM --platform=$BUILDPLATFORM <your-namespace>/dhi-dotnet:9.0-alpine AS build |
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I got an error from this image. Tag does not exist and I think the sdk variant is required to build.
Updated the tag to 9.0-sdk-alpine3.22 and it gets past it.
| RUN --mount=type=cache,id=nuget,target=/root/.nuget/packages \ | ||
| dotnet publish -a ${TARGETARCH/amd64/x64} --use-current-runtime --self-contained false -o /app | ||
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| FROM <your-namespace>/dhi-aspnetcore:9.0-alpine AS final |
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I get an error from this image. Tag does not exist. Updating the tag to 9.0-alpine3.22 gets past it.
| WORKDIR /app | ||
| COPY --from=build /app . | ||
| ARG UID=10001 | ||
| RUN adduser \ |
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I get an error from adduser. I don't think it's included in the image.
Runtime variants already run as a non-root user, so suggest removing all the pieces for adding and running as the appuser.
| appuser | ||
| USER appuser | ||
| ENTRYPOINT ["dotnet", "myWebApp.dll"] | ||
| ``` |
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Even after the above changes, the app still fails to run because it appears to be not compatible with either the original v8 app, or the changes to update the app to v10.
Suggest updating this to use the new v10 and test it with the updated v10 app.
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Description
Errr... I updated the .NET guide to 10. 😆
Related issues or tickets
The sample .NET repo has a PR as well - docker/docker-dotnet-sample#9
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