Dockerfile

# Debian-based image with Python interpreter
FROM python:3.6.1-slim

# Install crontab
RUN apt-get update && apt-get -y install cron

# Install LaTeX
RUN apt-get -y install texlive-full

# Install and configure package manager
RUN pip install --upgrade pip
RUN pip install 'poetry==1.1.6'
RUN poetry config virtualenvs.in-project true

# Activate Poetry's virtual environment
ENV VIRTUAL_ENV=/app/.venv
ENV PATH="$VIRTUAL_ENV/bin:$PATH"

# Project root directory inside container
WORKDIR /app

# Suppress caching of compiled Python code
ENV PYTHONDONTWRITEBYTECODE=1

# Copy manifest and lock file into container
COPY pyproject.toml poetry.lock ./

# Install runtime dependencies only
RUN poetry install --no-dev

# Copy all sources into container
COPY src src

# Copy main.py file into container
COPY main.py main.py

# Copy logging configuration into container
COPY logging.ini logging.ini

# Copy configure_crontabs.sh into container
COPY configure_crontabs.sh configure_crontabs.sh

# Create logs dir
RUN mkdir logs

# If the CRONTAB expression is not defined, just run the python command, otherwise
# just wait for the crontab triggers.
CMD if [ -z $CRONTAB ]; then python main.py -m `date +\%-m --date="1 month ago"` -y `date +\%Y --date="1 month ago"` -e "$EMAILS"; else bash configure_crontabs.sh "$EMAILS" "$CRONTAB"; fi