#================ # 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