grpc1.45.2/templates/tools/dockerfile/csharp_deps.include

#================
# C# dependencies

# cmake >=3.6 needed to build grpc_csharp_ext
RUN apt-get update && apt-get install -y cmake && apt-get clean

# Install mono
RUN apt-get update && apt-get install -y apt-transport-https dirmngr && apt-get clean
RUN apt-key adv --no-tty --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
RUN echo "deb https://download.mono-project.com/repo/debian stable-buster main" | tee /etc/apt/sources.list.d/mono-official-stable.list
RUN apt-get update && apt-get install -y ${'\\'}
    mono-devel ${'\\'}
    ca-certificates-mono ${'\\'}
    nuget ${'\\'}
    && apt-get clean