Adding WeasyPrint in Docker

I am new to Docker (and falling in lov with it) and have never used WeasyPrint before. (Selected because I need to create Javascript based charts.)

I use the django Cookiecutter setup for Docker.

So what do i need to change in this Dockerfile to include WeasyPrint?

I found this on Weasy setup page.

https://doc.courtbouillon.org/weasyprint/stable/first_steps.html#ubuntu-20-04

I also added the weasyprint to the requirements.txt.

Not sure what to add or where? Or even if this is how to set up?

Thank you.

Dockerfile:

# define an alias for the specific python version used in this file.
FROM python:3.11.5-slim-bullseye as python

# Python build stage
FROM python as python-build-stage

ARG BUILD_ENVIRONMENT=local

# Install apt packages
RUN apt-get update && apt-get install --no-install-recommends -y \
  # dependencies for building Python packages
  build-essential \
  # psycopg2 dependencies
  libpq-dev

# Requirements are installed here to ensure they will be cached.
COPY ./requirements .

# Create Python Dependency and Sub-Dependency Wheels.
RUN pip wheel --wheel-dir /usr/src/app/wheels  \
  -r ${BUILD_ENVIRONMENT}.txt


# Python 'run' stage
FROM python as python-run-stage

ARG BUILD_ENVIRONMENT=local
ARG APP_HOME=/app

ENV PYTHONUNBUFFERED 1
ENV PYTHONDONTWRITEBYTECODE 1
ENV BUILD_ENV ${BUILD_ENVIRONMENT}

WORKDIR ${APP_HOME}


# devcontainer dependencies and utils
RUN apt-get update && apt-get install --no-install-recommends -y \
  sudo git bash-completion nano ssh

# Create devcontainer user and add it to sudoers
RUN groupadd --gid 1000 dev-user \
  && useradd --uid 1000 --gid dev-user --shell /bin/bash --create-home dev-user \
  && echo dev-user ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/dev-user \
  && chmod 0440 /etc/sudoers.d/dev-user


# Install required system dependencies
RUN apt-get update && apt-get install --no-install-recommends -y \
  # psycopg2 dependencies
  libpq-dev \
  # Translations dependencies
  gettext \
  # cleaning up unused files
  && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
  && rm -rf /var/lib/apt/lists/* \


# All absolute dir copies ignore workdir instruction. All relative dir copies are wrt to the workdir instruction
# copy python dependency wheels from python-build-stage
COPY --from=python-build-stage /usr/src/app/wheels  /wheels/

# use wheels to install python dependencies
RUN pip install --no-cache-dir --no-index --find-links=/wheels/ /wheels/* \
  && rm -rf /wheels/

COPY ./compose/production/django/entrypoint /entrypoint
RUN sed -i 's/\r$//g' /entrypoint
RUN chmod +x /entrypoint

COPY ./compose/local/django/start /start
RUN sed -i 's/\r$//g' /start
RUN chmod +x /start


COPY ./compose/local/django/celery/worker/start /start-celeryworker
RUN sed -i 's/\r$//g' /start-celeryworker
RUN chmod +x /start-celeryworker

COPY ./compose/local/django/celery/beat/start /start-celerybeat
RUN sed -i 's/\r$//g' /start-celerybeat
RUN chmod +x /start-celerybeat

COPY ./compose/local/django/celery/flower/start /start-flower
RUN sed -i 's/\r$//g' /start-flower
RUN chmod +x /start-flower


# copy application code to WORKDIR
COPY . ${APP_HOME}

ENTRYPOINT ["/entrypoint"]