FROM alpine:3.12.1

# Base build dependencies
RUN apk add "gcc=9.3.0-r2" "g++=9.3.0-r2" make python3 py3-pip \
    git openssl-libs-static openssl-dev

# We use version-qualified names for compiler executables
RUN ln -s $(type -P gcc) /usr/local/bin/gcc-9 && \
    ln -s $(type -P g++) /usr/local/bin/g++-9

# Some Python test dependencies
RUN python3 -m pip install pytest pytest-xdist \
    pytest-asyncio semver typing-extensions