Add Docker stuff

Dockerfile

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+# Stage 1: Build the requirements.txt using Poetry
+FROM python:3.12-slim AS builder
+
+# Set environment variables for Python
+ENV PYTHONDONTWRITEBYTECODE 1
+ENV PYTHONUNBUFFERED 1
+ENV PATH="${PATH}:/root/.local/bin"
+
+# Install system dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    curl \
+    git \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Poetry
+RUN curl -sSL https://install.python-poetry.org | python3 -
+
+# Copy only the poetry.lock/pyproject.toml to leverage Docker cache
+WORKDIR /app
+COPY pyproject.toml poetry.lock /app/
+
+# Install dependencies and create requirements.txt
+RUN poetry self add poetry-plugin-export && poetry export --format=requirements.txt --output=requirements.txt --only=main --without-hashes
+
+# Stage 2: Install dependencies and run the Django application
+FROM python:3.12-slim AS runner
+
+# Set environment variables for Python
+ENV PYTHONDONTWRITEBYTECODE 1
+ENV PYTHONUNBUFFERED 1
+
+# Create a non-root user
+RUN useradd -ms /bin/bash appuser
+
+# Install system dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    libpq-dev \
+    git \
+    netcat-openbsd \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy the generated requirements.txt from the builder stage
+WORKDIR /app
+COPY --from=builder /app/requirements.txt /app/
+
+# Install application dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the rest of the application code
+COPY . /app/
+
+# Change ownership of the application directory to the non-root user
+RUN chown -R appuser:appuser /app
+
+# Switch to the non-root user
+USER appuser
+
+# The port the application will listen on
+EXPOSE 8000
+
+# Run startup script
+CMD ["./docker-entrypoint.sh"]

docker-entrypoint.sh

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+#!/bin/sh
+
+# Exit on error
+set -e
+
+# Print commands and their arguments as they are executed.
+set -x
+
+# Wait for database
+echo "Waiting for database"
+while ! nc -z "$PGHOST" "$PGPORT"; do
+  sleep 0.1
+done
+echo "Database started"
+
+# Django entrypoint script
+# 1. Collect static files
+echo "Collect static files"
+python manage.py collectstatic --noinput
+echo "Collect static files done"
+
+# 2. Apply database migrations
+echo "Apply database migrations"
+python manage.py migrate
+echo "Apply database migrations done"
+
+# https://docs.gunicorn.org/en/stable/design.html#how-many-workers
+num_cores=$(nproc --all)
+workers=$((2 * num_cores + 1))
+
+# 3. Start server
+echo "Starting server with $workers workers"
+gunicorn --workers=$workers --bind=0.0.0.0:8000 feedvault.wsgi:application --log-level=info --access-logfile=- --error-logfile=- --forwarded-allow-ips="172.*,192.*" --proxy-allow-from="172.*,192.*"
+echo "Bye, love you"