Dockerfile.python

# syntax=docker/dockerfile:1.2

ARG PYTHON_VERSION=3.8

# Get watchman
FROM debian:bullseye AS watchman
RUN apt-get update && apt-get install -y watchman
# Done

# Create the project image
FROM python:$PYTHON_VERSION

# Get the watchman binary from the previous stage
RUN mkdir -p /usr/local/bin /usr/local/var/run/watchman
COPY --from=watchman /usr/bin/watchman /usr/local/bin/
RUN chmod 2777 /usr/local/var/run/watchman

# Install extras packages
RUN apt-get update && apt-get install -y \
    sudo \
    && rm -rf /var/lib/apt/lists/*

# Create a "developer" user, with sudo privileges (no password)
RUN useradd -ms /bin/bash developer && \
    echo "developer ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
USER developer

# Make sure stdout is not buffered, in order to see output in real time
ENV PYTHONUNBUFFERED 1

# Require an active virtualenv for pip
ENV PIP_REQUIRE_VIRTUALENV true

# Configure watchman
ENV DJANGO_WATCHMAN_TIMEOUT 30

WORKDIR /code

# Create the project layout and install the dependencies
COPY requirements_local.txt ./

# Create and activate the virtualenv
RUN python -m venv /code/var/venv
ENV VIRTUAL_ENV /code/var/venv
ENV PATH $VIRTUAL_ENV/bin:$PATH

# Install dependencies
python -m pip install -U pip
python -m pip install -r requirements_local.txt