Dockerfile

FROM ubuntu:focal as app

ENV DEBIAN_FRONTEND noninteractive
# System requirements.
RUN apt update && \
  apt-get install -qy \ 
  curl \
  # required by bower installer
  git \
  language-pack-en \
  build-essential \
  python3.8-dev \
  python3-virtualenv \
  python3.8-distutils \
  libmysqlclient-dev \
  libssl-dev \
  libcairo2-dev && \
  rm -rf /var/lib/apt/lists/*

# Use UTF-8.
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

ARG COMMON_APP_DIR="/edx/app"
ARG COMMON_CFG_DIR="/edx/etc"
ARG DISCOVERY_SERVICE_NAME="discovery"
ARG DISCOVERY_APP_DIR="${COMMON_APP_DIR}/${DISCOVERY_SERVICE_NAME}"
ARG DISCOVERY_VENV_DIR="${COMMON_APP_DIR}/${DISCOVERY_SERVICE_NAME}/venvs/${DISCOVERY_SERVICE_NAME}"
ARG DISCOVERY_CODE_DIR="${DISCOVERY_APP_DIR}/${DISCOVERY_SERVICE_NAME}"
ARG DISCOVERY_NODEENV_DIR="${DISCOVERY_APP_DIR}/nodeenvs/${DISCOVERY_SERVICE_NAME}"

ENV PATH "${DISCOVERY_VENV_DIR}/bin:${DISCOVERY_NODEENV_DIR}/bin:$PATH"
ENV DISCOVERY_CFG "/edx/etc/discovery.yml"
ENV DISCOVERY_CODE_DIR "${DISCOVERY_CODE_DIR}"
ENV DISCOVERY_APP_DIR "${DISCOVERY_APP_DIR}"

RUN virtualenv -p python3.8 --always-copy ${DISCOVERY_VENV_DIR}

# No need to activate discovery venv as it is already in path
RUN pip install nodeenv

RUN nodeenv ${DISCOVERY_NODEENV_DIR} --node=16.14.0 --prebuilt && npm install -g npm@8.5.x

# Working directory will be root of repo.
WORKDIR ${DISCOVERY_CODE_DIR}

# Copy just JS requirements and install them.
COPY package.json package.json
COPY package-lock.json package-lock.json
COPY bower.json bower.json
RUN npm install --production && ./node_modules/.bin/bower install --allow-root --production

# Expose canonical Discovery port
EXPOSE 18381
EXPOSE 8381

FROM app as prod

ENV DJANGO_SETTINGS_MODULE "course_discovery.settings.production"

COPY requirements/production.txt ${DISCOVERY_CODE_DIR}/requirements/production.txt

RUN pip install -r ${DISCOVERY_CODE_DIR}/requirements/production.txt

# Copy over rest of code.
# We do this AFTER requirements so that the requirements cache isn't busted
# every time any bit of code is changed.
COPY . .

CMD gunicorn --bind=0.0.0.0:8381 --workers 2 --max-requests=1000 -c course_discovery/docker_gunicorn_configuration.py course_discovery.wsgi:application

FROM app as dev

ENV DJANGO_SETTINGS_MODULE "course_discovery.settings.devstack"

COPY requirements/local.txt ${DISCOVERY_CODE_DIR}/requirements/local.txt
COPY requirements/django.txt ${DISCOVERY_CODE_DIR}/requirements/django.txt

RUN pip install -r ${DISCOVERY_CODE_DIR}/requirements/django.txt
RUN pip install -r ${DISCOVERY_CODE_DIR}/requirements/local.txt

# Devstack related step for backwards compatibility
RUN touch ${DISCOVERY_APP_DIR}/discovery_env

# Copy over rest of code.
# We do this AFTER requirements so that the requirements cache isn't busted
# every time any bit of code is changed.
COPY . .

CMD while true; do python ./manage.py runserver 0.0.0.0:8381; sleep 2; done

###########################################################
# Define k8s target
FROM prod as kubernetes
ENV DISCOVERY_SETTINGS='kubernetes'
ENV DJANGO_SETTINGS_MODULE="course_discovery.settings.$DISCOVERY_SETTINGS"