Dockerfile

ARG REPO=mcr.microsoft.com/dotnet/aspnet
FROM $REPO:6.0.36-bullseye-slim-arm32v7

ENV \
    # Unset ASPNETCORE_URLS from aspnet base image
    ASPNETCORE_URLS= \
    # Do not generate certificate
    DOTNET_GENERATE_ASPNET_CERTIFICATE=false \
    # Do not show first run text
    DOTNET_NOLOGO=true \
    # SDK version
    DOTNET_SDK_VERSION=6.0.428 \
    # Enable correct mode for dotnet watch (only mode supported in a container)
    DOTNET_USE_POLLING_FILE_WATCHER=true \
    # Skip extraction of XML docs - generally not useful within an image/container - helps performance
    NUGET_XMLDOC_MODE=skip \
    # PowerShell telemetry for docker image usage
    POWERSHELL_DISTRIBUTION_CHANNEL=PSDocker-DotnetSDK-Debian-11-arm32

RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        curl \
        git \
        wget \
    && rm -rf /var/lib/apt/lists/*

# Install .NET SDK
RUN curl -fSL --output dotnet.tar.gz https://dotnetcli.azureedge.net/dotnet/Sdk/$DOTNET_SDK_VERSION/dotnet-sdk-$DOTNET_SDK_VERSION-linux-arm.tar.gz \
    && dotnet_sha512='c751881dd27ef098428e616b99a9c16e8bf82526484f76987dac1efcb5177534749c8f943f6d9daacc3a91bb086c9cb9c8d535c9881c0be3dc19c647065968fe' \
    && echo "$dotnet_sha512  dotnet.tar.gz" | sha512sum -c - \
    && mkdir -p /usr/share/dotnet \
    && tar -oxzf dotnet.tar.gz -C /usr/share/dotnet ./packs ./sdk ./sdk-manifests ./templates ./LICENSE.txt ./ThirdPartyNotices.txt \
    && rm dotnet.tar.gz \
    # Trigger first run experience by running arbitrary cmd
    && dotnet help

# Install PowerShell global tool
RUN powershell_version=7.2.23 \
    && curl -fSL --output PowerShell.Linux.arm32.$powershell_version.nupkg https://powershellinfraartifacts-gkhedzdeaghdezhr.z01.azurefd.net/tool/$powershell_version/PowerShell.Linux.arm32.$powershell_version.nupkg \
    && powershell_sha512='2f0805bd8de896f4eb47a339fd50b0fd50b1a72bb397ec76c257478de8ba98a68f711f0aaf315996b6809072359a0c1a1142e84f5afe18049db8777de8f635c1' \
    && echo "$powershell_sha512  PowerShell.Linux.arm32.$powershell_version.nupkg" | sha512sum -c - \
    && mkdir -p /usr/share/powershell \
    && dotnet tool install --add-source / --tool-path /usr/share/powershell --version $powershell_version PowerShell.Linux.arm32 \
    && dotnet nuget locals all --clear \
    && rm PowerShell.Linux.arm32.$powershell_version.nupkg \
    && ln -s /usr/share/powershell/pwsh /usr/bin/pwsh \
    && chmod 755 /usr/share/powershell/pwsh \
    # To reduce image size, remove the copy nupkg that nuget keeps.
    && find /usr/share/powershell -print | grep -i '.*[.]nupkg$' | xargs rm