dotnet.Dockerfile

# Build the runtime from source
ARG HOST_VERSION=3.2.0
FROM mcr.microsoft.com/azure-functions/base:grpc-2.27-arm32v7 as grpc-image
FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS runtime-image
ARG HOST_VERSION

ENV PublishWithAspNetCoreTargetManifest=false

RUN BUILD_NUMBER=$(echo ${HOST_VERSION} | cut -d'.' -f 3) && \
    git clone --branch v${HOST_VERSION} https://github.com/Azure/azure-functions-host /src/azure-functions-host && \
    cd /src/azure-functions-host && \
    HOST_COMMIT=$(git rev-list -1 HEAD) && \
    dotnet publish -v q /p:BuildNumber=$BUILD_NUMBER /p:CommitHash=$HOST_COMMIT src/WebJobs.Script.WebHost/WebJobs.Script.WebHost.csproj -c Release --output /azure-functions-host && \
    mv /azure-functions-host/workers /workers && mkdir /azure-functions-host/workers && \
    rm -rf /root/.local /root/.nuget /src

RUN EXTENSION_BUNDLE_VERSION=1.8.1 && \
    EXTENSION_BUNDLE_FILENAME=Microsoft.Azure.Functions.ExtensionBundle.1.8.1_linux-x64.zip && \
    apt-get update && \
    apt-get install -y gnupg wget unzip && \
    wget https://functionscdn.azureedge.net/public/ExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION/$EXTENSION_BUNDLE_FILENAME && \
    mkdir -p /FuncExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION && \
    unzip /$EXTENSION_BUNDLE_FILENAME -d /FuncExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION && \
    rm -f /$EXTENSION_BUNDLE_FILENAME && \
    EXTENSION_BUNDLE_VERSION_V2=2.6.1 && \
    EXTENSION_BUNDLE_FILENAME_V2=Microsoft.Azure.Functions.ExtensionBundle.${EXTENSION_BUNDLE_VERSION_V2}_linux-x64.zip && \
    wget https://functionscdn.azureedge.net/public/ExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION_V2/$EXTENSION_BUNDLE_FILENAME_V2 && \
    mkdir -p /FuncExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION_V2 && \
    unzip /$EXTENSION_BUNDLE_FILENAME_V2 -d /FuncExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION_V2 && \
    rm -f /$EXTENSION_BUNDLE_FILENAME_V2 && \
    EXTENSION_BUNDLE_VERSION_V3=3.0.0 && \
    EXTENSION_BUNDLE_FILENAME_V3=Microsoft.Azure.Functions.ExtensionBundle.${EXTENSION_BUNDLE_VERSION_V3}_linux-x64.zip && \
    wget https://functionscdn.azureedge.net/public/ExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION_V3/$EXTENSION_BUNDLE_FILENAME_V3 && \
    mkdir -p /FuncExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION_V3 && \
    unzip /$EXTENSION_BUNDLE_FILENAME_V3 -d /FuncExtensionBundles/Microsoft.Azure.Functions.ExtensionBundle/$EXTENSION_BUNDLE_VERSION_V3 && \
    rm -f /$EXTENSION_BUNDLE_FILENAME_V3

RUN apt-get update && \
    apt-get install -y qemu-user qemu-user-static

# Runtime image
FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-buster-slim-arm32v7
ARG HOST_VERSION

COPY --from=runtime-image ["/usr/bin/qemu-arm-static", "/usr/bin"]
COPY --from=runtime-image ["/azure-functions-host", "/azure-functions-host"]
COPY --from=runtime-image ["/FuncExtensionBundles", "/FuncExtensionBundles"]
COPY --from=grpc-image ["/libgrpc_csharp_ext.so.2.27.3", "/"]

RUN rm -f /azure-functions-host/runtimes/linux/native/* && \
    mv libgrpc_csharp_ext.so.2.27.3 /azure-functions-host/runtimes/linux/native/ && \
    cd /azure-functions-host/runtimes/linux/native/ && \
    ln -s libgrpc_csharp_ext.so.2.27.3 libgrpc_csharp_ext.so && \
    ln -s libgrpc_csharp_ext.so.2.27.3 libgrpc_csharp_ext.x64.so && \
    ln -s libgrpc_csharp_ext.so.2.27.3 libgrpc_csharp_ext.x86.so && \
    ln -s libgrpc_csharp_ext.so.2.27.3 libgrpc_csharp_ext.arm32v7.so

ENV AzureWebJobsScriptRoot=/home/site/wwwroot \
    HOME=/home \
    FUNCTIONS_WORKER_RUNTIME=dotnet \
    DOTNET_USE_POLLING_FILE_WATCHER=false \
    HOST_VERSION=${HOST_VERSION}

RUN rm /usr/bin/qemu-arm-static

CMD ["dotnet", "/azure-functions-host/Microsoft.Azure.WebJobs.Script.WebHost.dll"]