Build OpenSSL on python:3.9-slim

python-3.9-slim.Dockerfile

FROM python:3.9-slim as builder

RUN apt-get update -y && apt-get install -y --no-install-recommends wget make build-essential libssl-dev zlib1g zlib1g-dev

RUN mkdir -p /tmp/python

WORKDIR /tmp/python

RUN wget https://www.python.org/ftp/python/3.9.10/Python-3.9.10.tar.xz

RUN ls -halt

RUN tar -xf Python-3.9.10.tar.xz

WORKDIR /tmp/python/Python-3.9.10

RUN ./configure --with-openssl=/usr/include/openssl --enable-optimizations
RUN make -j$(nproc)
RUN make install