Dockerfile

ARG PYTHON_VERSION=3.11-slim-buster

FROM node:18-slim as client-builder

ARG APP_HOME=/app
WORKDIR ${APP_HOME}

COPY . ${APP_HOME}
RUN npm ci --no-audit && npm cache clean --force
RUN npm run build

# Define an alias for the specfic python version used in this file.
FROM python:${PYTHON_VERSION} as python

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

ARG BUILD_ENVIRONMENT=production

# Install apt packages
RUN apt-get update && apt-get install --no-install-recommends -y \
  # dependencies for building Python packages
  build-essential wget \
  # psycopg2 dependencies
  libpq-dev postgis gdal-bin libgdal-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=production
ARG APP_HOME=/app
ENV PYTHONUNBUFFERED 1
ENV PYTHONDONTWRITEBYTECODE 1
ENV BUILD_ENV ${BUILD_ENVIRONMENT}
WORKDIR ${APP_HOME}

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

# 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 application code to WORKDIR
COPY --from=client-builder ${APP_HOME} ${APP_HOME}


# Run the web service on container startup.
# Timeout is set to 0 to disable the timeouts of the workers to allow Cloud
# Run to handle instance scaling.
CMD gunicorn config.asgi \
    --bind 0.0.0.0:$PORT \
    --timeout 0 \
    --chdir=/app \
    -k uvicorn.workers.UvicornWorker