Build pythonnet for cp37-cp37m-linux_x86_64.whl

Dockerfile

FROM mono:6.12.0 AS build

ENV PYTHONNET_VER=2.5.2
# Install all the things necessary to build pythonnet
RUN apt update && apt install python3.7 python3-pip python3.7-dev clang g++ gcc -y
# Setup the python environment
RUN python3 -m pip install -U pip setuptools wheel pycparser
# Build the pythonnet wheel 
RUN python3 -m pip wheel pythonnet==$PYTHONNET_VER

FROM mono:6.12.0
RUN apt update && apt install python3.7 python3-pip python3.7-dev -y
COPY --from=build pythonnet-*.whl .
RUN python3 -m pip install -U pip pythonnet --find-links .
ENV PYTHONPATH=/usr/lib/mono/msbuild/Current/bin
ENTRYPOINT ["python3"]