#FROM python:3.10-alpine
FROM docker.io/python:3.10-slim AS base

ENV \
   LANG=C.UTF-8 \
   LC_ALL=C.UTF-8 \
   # python:
   PYTHONFAULTHANDLER=1 \
   PYTHONUNBUFFERED=1 \
   PYTHONHASHSEED=random \
   PYTHONDONTWRITEBYTECODE=1

RUN apt-get update

RUN apt-get install -y --no-install-recommends libmagic-dev libglib2.0-dev libpango-1.0-0 libpangoft2-1.0-0

ENV VIRTUAL_ENV=/venv

# Use production configuration.
ENV DJANGO_SETTINGS_MODULE=publichealth.settings
ENV DJANGO_CONFIGURATION=production


### builder image

FROM base as build

ENV \
   # pip:
   PIP_NO_CACHE_DIR=off \
   PIP_DISABLE_PIP_VERSION_CHECK=on \
   PIP_DEFAULT_TIMEOUT=100


RUN apt-get install -y --no-install-recommends build-essential gcc

# Install python build tools.
RUN pip install --upgrade pip setuptools==58
RUN pip install wheel

RUN python3 -m venv $VIRTUAL_ENV

RUN mkdir -p /build
WORKDIR /build

# Install python dependencies.
COPY requirements.txt requirements.txt ./
RUN . /venv/bin/activate && pip install -r requirements.txt

# We will run dumb-init as pid 1.
RUN . /venv/bin/activate && pip install dumb-init

# We will run our app using gunicorn.
RUN . /venv/bin/activate && pip install gunicorn

# Copy local code into to the build image.
COPY . /build

# Copy code required for runtime to the /app folder.
RUN mkdir /app
RUN cp -r publichealth yarn.lock manage.py /app/

# Collect static data into /app/static.
RUN . /venv/bin/activate && \
   DJANGO_STATIC_ROOT=/app/static ./manage.py collectstatic --no-input

RUN ls -al /app/


### runtime image

FROM base as runtime

#RUN apt-get install -y --no-install-recommends libpango-1.0-0 libpangoft2-1.0-0
#RUN apt-get install -y --no-install-recommends procps iproute2 curl

COPY --from=build /venv /venv
COPY --from=build /app /app

WORKDIR /app

# Ensure exectutables from virtualenv are prefered.
ENV PATH="/venv/bin:$PATH"
ENTRYPOINT ["/venv/bin/dumb-init", "--", "gunicorn", \
   "-b [::]:8000", \
   "--log-file=-", \
   "--worker-tmp-dir", "/dev/shm", \
   "--workers=2", "--threads=4", "--worker-class=gthread"]
CMD ["publichealth.wsgi"]