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Docker

# CI test image for pyWebLayout
# Build: docker build -f Dockerfile.ci -t gitea.tourolle.paris/dtourolle/pyweblayout-ci:latest .
# Push: docker push gitea.tourolle.paris/dtourolle/pyweblayout-ci:latest
#
# pyWebLayout is a library, so CI tests every interpreter pyproject.toml claims
# to support rather than just one. All four are in this image and the workflow
# matrix picks one per job; dependencies are pre-installed into each, so a CI
# run downloads nothing.
FROM ubuntu:24.04
ENV DEBIAN_FRONTEND=noninteractive
# deadsnakes carries the Python versions Ubuntu 24.04 does not ship
RUN apt-get update && apt-get install -y --no-install-recommends \
ca-certificates \
gnupg \
software-properties-common \
&& add-apt-repository -y ppa:deadsnakes/ppa \
&& apt-get update && apt-get install -y --no-install-recommends \
# Interpreters. 3.12 is Ubuntu 24.04's own; the rest come from deadsnakes.
python3.10 python3.10-venv \
python3.11 python3.11-venv \
python3.12 python3.12-venv \
python3.13 python3.13-venv \
# Pillow needs these at runtime for font rasterisation and image IO
libfreetype6 \
libjpeg-turbo8 \
libopenjp2-7 \
libtiff6 \
zlib1g \
# Used by the workflow itself
curl \
git \
nodejs \
&& rm -rf /var/lib/apt/lists/*
# One venv per interpreter at a predictable path, /opt/py<version>. Ubuntu marks
# its system Python externally-managed, so installing into venvs sidesteps that
# without --break-system-packages, and keeps the four dependency sets isolated.
#
# The package list is written once so versions cannot drift between
# interpreters. It mirrors pyproject.toml's runtime deps plus the test and dev
# extras; keep the two in step.
#
# Deliberately NOT installed: pyWebLayout itself. The workflow installs the
# checkout with --no-deps, so a job always tests the code under review.
#
# setuptools is pinned below 81 because that release dropped pkg_resources,
# which coverage-badge still imports at startup. Without the pin the badge step
# dies with ModuleNotFoundError. Revisit when coverage-badge stops using it.
RUN for v in 3.10 3.11 3.12 3.13; do \
python$v -m venv /opt/py$v && \
/opt/py$v/bin/pip install --no-cache-dir --upgrade pip wheel && \
/opt/py$v/bin/pip install --no-cache-dir --upgrade "setuptools<81" && \
/opt/py$v/bin/pip install --no-cache-dir \
Pillow \
numpy \
pyphen \
beautifulsoup4 \
lxml \
pytest \
pytest-cov \
flask \
werkzeug \
ebooklib \
requests \
flake8 \
coverage-badge \
interrogate \
; \
done
# Fail the build rather than ship an image whose dependencies do not import
RUN for v in 3.10 3.11 3.12 3.13; do \
echo "--- python$v ---" && \
/opt/py$v/bin/python -c \
"import sys, PIL, numpy, pyphen, bs4, pytest, flask, ebooklib, requests; \
print(sys.version.split()[0], 'deps OK')" \
; \
done