Dockerfile

FROM ubuntu:focal as app

# Packages installed:

# language-pack-en locales; ubuntu locale support so that system utilities have a consistent
# language and time zone.

# python; ubuntu doesnt ship with python, so this is the python we will use to run the application

# python3-pip; install pip to install application requirements.txt files

# libmysqlclient-dev; to install header files needed to use native C implementation for
# MySQL-python for performance gains.

# libssl-dev; # mysqlclient wont install without this.

# python3-dev; to install header files for python extensions; much wheel-building depends on this

# gcc; for compiling python extensions distributed with python packages like mysql-client

# If you add a package here please include a comment above describing what it is used for
RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -qy install --no-install-recommends \
 language-pack-en locales \
 python3.12 python3-dev python3-pip \
 # The mysqlclient Python package has install-time dependencies
 libmysqlclient-dev libssl-dev pkg-config \
 gcc


RUN pip install --upgrade pip setuptools
# delete apt package lists because we do not need them inflating our image
RUN rm -rf /var/lib/apt/lists/*

RUN ln -s /usr/bin/python3 /usr/bin/python

RUN locale-gen en_US.UTF-8
ENV LANG en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8

EXPOSE {{cookiecutter.port}}
RUN useradd -m --shell /bin/false app

WORKDIR /edx/app/{{cookiecutter.repo_name}}

FROM app as prod

ENV DJANGO_SETTINGS_MODULE {{cookiecutter.project_name}}.settings.production

# Copy the requirements explicitly even though we copy everything below
# this prevents the image cache from busting unless the dependencies have changed.
COPY requirements/production.txt /edx/app/{{cookiecutter.repo_name}}/requirements/production.txt

# Dependencies are installed as root so they cannot be modified by the application user.
RUN pip install -r requirements/production.txt

RUN mkdir -p /edx/var/log

# Code is owned by root so it cannot be modified by the application user.
# So we copy it before changing users.
USER app

# Gunicorn 19 does not log to stdout or stderr by default. Once we are past gunicorn 19, the logging to STDOUT need not be specified.
CMD gunicorn --workers=2 --name {{cookiecutter.repo_name}} -c /edx/app/{{cookiecutter.repo_name}}/{{cookiecutter.project_name}}/docker_gunicorn_configuration.py --log-file - --max-requests=1000 {{cookiecutter.project_name}}.wsgi:application

# This line is after the requirements so that changes to the code will not
# bust the image cache
COPY . /edx/app/{{cookiecutter.repo_name}}

FROM app as dev

ENV DJANGO_SETTINGS_MODULE {{cookiecutter.project_name}}.settings.devstack

# Copy the requirements explicitly even though we copy everything below
# this prevents the image cache from busting unless the dependencies have changed.
COPY requirements/dev.txt /edx/app/{{cookiecutter.repo_name}}/requirements/dev.txt

RUN pip install -r requirements/dev.txt

# After the requirements so changes to the code will not bust the image cache
COPY . /edx/app/{{cookiecutter.repo_name}}

# Devstack related step for backwards compatibility
RUN touch {{cookiecutter.project_name}}/{{cookiecutter.project_name}}_env

CMD while true; do python ./manage.py runserver 0.0.0.0:{{cookiecutter.port}}; sleep 2; done