Dockerfile to build Python 3.13.9 from source with an Alpine image.

Dockerfile.python

# Dockerfile to build Python 3.13.9 from source with an Alpine image.
FROM alpine:latest

# Install build dependencies for python and git
RUN sed -i '2s/^# *//' /etc/apk/repositories
RUN apk update && apk add --no-cache build-base zlib-dev openssl-dev git

# Create python directory.
RUN mkdir -p /usr/build/python
WORKDIR /usr/build/python

# Test gcc installed.
RUN gcc --version

# Test make installed.
RUN make --version

# Test git installed.
RUN git --version

# Clone Python 3.13.9 from CPython git repository on GitHub and build it.
RUN git clone --depth 1 --branch v3.13.9 https://github.com/python/cpython
RUN cd cpython && git checkout v3.13.9
RUN cd cpython && ./configure --prefix=/opt/python/3.13.9 --enable-optimizations
RUN cd cpython && make -j$(nproc) PROFILE_TASK="" profile-opt
RUN cd cpython && make install

# Keep container running.
CMD [ "tail", "-f", "/dev/null" ]