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Add Windows Server Core and Nano Server 2025 .NET sample images (#6515)
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: lbussell <36081148+lbussell@users.noreply.github.com> Co-authored-by: Logan Bussell <loganbussell@microsoft.com>
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‎README.samples.md‎

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@@ -109,6 +109,13 @@ dotnetapp-chiseled-9.0, dotnetapp-chiseled | [Dockerfile](samples/dotnetapp/Dock
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aspnetapp-9.0, aspnetapp | [Dockerfile](samples/aspnetapp/Dockerfile.alpine) | Alpine
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aspnetapp-chiseled-9.0, aspnetapp-chiseled | [Dockerfile](samples/aspnetapp/Dockerfile.chiseled) | Ubuntu
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### Nano Server 2025 amd64 Tags
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Tag | Dockerfile
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---------| ---------------
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dotnetapp-9.0-nanoserver-ltsc2025, dotnetapp-nanoserver-ltsc2025, dotnetapp-9.0, dotnetapp, latest | [Dockerfile](samples/dotnetapp/Dockerfile.nanoserver)
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aspnetapp-9.0-nanoserver-ltsc2025, aspnetapp-nanoserver-ltsc2025, aspnetapp-9.0, aspnetapp | [Dockerfile](samples/aspnetapp/Dockerfile.nanoserver)
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### Nano Server 2022 amd64 Tags
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Tag | Dockerfile

‎eng/mcr-tags-metadata-templates/samples-tags.yml‎

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@@ -3,6 +3,8 @@ $(McrTagsYmlTagGroup:dotnetapp)
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$(McrTagsYmlTagGroup:dotnetapp-chiseled)
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$(McrTagsYmlTagGroup:aspnetapp)
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$(McrTagsYmlTagGroup:aspnetapp-chiseled)
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$(McrTagsYmlTagGroup:dotnetapp-nanoserver-ltsc2025)
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$(McrTagsYmlTagGroup:aspnetapp-nanoserver-ltsc2025)
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$(McrTagsYmlTagGroup:dotnetapp-nanoserver-ltsc2022)
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$(McrTagsYmlTagGroup:aspnetapp-nanoserver-ltsc2022)
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$(McrTagsYmlTagGroup:dotnetapp-nanoserver-1809)

‎manifest.samples.json‎

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"dotnetapp-9.0-nanoserver-ltsc2022": {},
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"dotnetapp-nanoserver-ltsc2022": {}
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}
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},
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{
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"buildArgs": {
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"TAG": "ltsc2025"
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},
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"dockerfile": "samples/dotnetapp/Dockerfile.nanoserver",
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"os": "windows",
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"osVersion": "nanoserver-ltsc2025",
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"tags": {
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"dotnetapp-9.0-nanoserver-ltsc2025": {},
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"dotnetapp-nanoserver-ltsc2025": {}
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}
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}
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]
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},
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]
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}
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]
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},
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{
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"buildArgs": {
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"TAG": "ltsc2025"
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},
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"dockerfile": "samples/aspnetapp/Dockerfile.nanoserver",
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"os": "windows",
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"osVersion": "nanoserver-ltsc2025",
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"tags": {
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"aspnetapp-9.0-nanoserver-ltsc2025": {},
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"aspnetapp-nanoserver-ltsc2025": {}
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},
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"customBuildLegGroups": [
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{
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"name": "test-dependencies",
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"type": "Integral",
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"dependencies": [
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"$(Repo:samples):dotnetapp-9.0-nanoserver-ltsc2025"
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]
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}
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]
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}
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]
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},

‎samples/aspnetapp/Dockerfile.nanoserver‎

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# escape=`
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# Learn about building .NET container images:
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# https://github.com/dotnet/dotnet-docker/blob/main/samples/README.md
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ARG TAG=ltsc2022
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ARG TAG=ltsc2025
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FROM mcr.microsoft.com/dotnet/sdk:9.0-nanoserver-$TAG AS build
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WORKDIR /source
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‎samples/aspnetapp/Dockerfile.windowsservercore‎

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# Learn about building .NET container images:
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# https://github.com/dotnet/dotnet-docker/blob/main/samples/README.md
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FROM mcr.microsoft.com/dotnet/sdk:9.0-windowsservercore-ltsc2022 AS build
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ARG TAG=ltsc2025
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FROM mcr.microsoft.com/dotnet/sdk:9.0-windowsservercore-$TAG AS build
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WORKDIR /source
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# Copy project file and restore as distinct layers
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RUN dotnet publish --no-restore -o /app
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# Runtime stage
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FROM mcr.microsoft.com/dotnet/aspnet:9.0-windowsservercore-ltsc2022
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FROM mcr.microsoft.com/dotnet/aspnet:9.0-windowsservercore-$TAG
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EXPOSE 8080
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WORKDIR /app
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COPY --link --from=build /app .

‎samples/aspnetapp/Dockerfile.windowsservercore-iis‎

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# Learn about building .NET container images:
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# https://github.com/dotnet/dotnet-docker/blob/main/samples/README.md
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# Runtime stage
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FROM mcr.microsoft.com/dotnet/aspnet:9.0-windowsservercore-ltsc2022 AS final
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ARG TAG=ltsc2025
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FROM mcr.microsoft.com/dotnet/aspnet:9.0-windowsservercore-$TAG AS final
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RUN powershell -Command `
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$ErrorActionPreference = 'Stop'; `
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Remove-Item -Force C:\dotnet-hosting-win.exe; `
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Remove-Item -Force -Recurse $Env:Temp\*
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FROM mcr.microsoft.com/dotnet/sdk:9.0-windowsservercore-ltsc2022 AS build
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FROM mcr.microsoft.com/dotnet/sdk:9.0-windowsservercore-$TAG AS build
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WORKDIR /source
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# Copy project file and restore as distinct layers

‎samples/aspnetapp/README.md‎

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- `mcr.microsoft.com/dotnet/samples:aspnetapp-nanoserver-1809`
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- `mcr.microsoft.com/dotnet/samples:aspnetapp-nanoserver-ltsc2022`
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- `mcr.microsoft.com/dotnet/samples:aspnetapp-nanoserver-ltsc2025`

‎samples/dotnetapp/Dockerfile.nanoserver‎

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# escape=`
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# Learn about building .NET container images:
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# https://github.com/dotnet/dotnet-docker/blob/main/samples/README.md
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ARG TAG=ltsc2022
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ARG TAG=ltsc2025
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FROM mcr.microsoft.com/dotnet/sdk:9.0-nanoserver-$TAG AS build
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WORKDIR /source
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‎samples/dotnetapp/Dockerfile.windowsservercore‎

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# Learn about building .NET container images:
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# https://github.com/dotnet/dotnet-docker/blob/main/samples/README.md
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FROM mcr.microsoft.com/dotnet/sdk:9.0-windowsservercore-ltsc2022 AS build
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ARG TAG=ltsc2025
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FROM mcr.microsoft.com/dotnet/sdk:9.0-windowsservercore-$TAG AS build
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WORKDIR /source
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# Copy project file and restore as distinct layers
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RUN dotnet publish --no-restore -o /app
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# Runtime stage
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FROM mcr.microsoft.com/dotnet/runtime:9.0-windowsservercore-ltsc2022
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FROM mcr.microsoft.com/dotnet/runtime:9.0-windowsservercore-$TAG
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WORKDIR /app
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COPY --link --from=build /app .
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USER ContainerUser

‎samples/dotnetapp/README.md‎

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- `mcr.microsoft.com/dotnet/samples:dotnetapp-nanoserver-1809`
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- `mcr.microsoft.com/dotnet/samples:dotnetapp-nanoserver-ltsc2022`
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- `mcr.microsoft.com/dotnet/samples:dotnetapp-nanoserver-ltsc2025`

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