Dockerfile

ARG REPO=mcr.microsoft.com/dotnet/core/runtime-deps
FROM $REPO:2.1-focal-arm32v7

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

# Install ASP.NET Core
ENV ASPNETCORE_VERSION 2.1.19

RUN curl -SL --output aspnetcore.tar.gz https://dotnetcli.azureedge.net/dotnet/aspnetcore/Runtime/$ASPNETCORE_VERSION/aspnetcore-runtime-$ASPNETCORE_VERSION-linux-arm.tar.gz \
    && aspnetcore_sha512='f8ec53beb23c1308d91ffb2931c804714a0a10553319ffa596cd47d00cf324207130397f90ab5b78dc3d4f408eefd6753221254abaf0d02ffca9522b85851892' \
    && echo "$aspnetcore_sha512  aspnetcore.tar.gz" | sha512sum -c - \
    && mkdir -p /usr/share/dotnet \
    && tar -zxf aspnetcore.tar.gz -C /usr/share/dotnet \
    && rm aspnetcore.tar.gz \
    && ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet