Dockerfile

# syntax=docker/dockerfile:1

ARG PYTHON_VERSION=3.10.12
FROM python:${PYTHON_VERSION}-slim as base

# Install system dependencies required by OpenCV and HEIF
RUN apt-get update && apt-get install -y libgl1-mesa-glx libglib2.0-0 libheif-dev && apt-get clean && rm -rf /var/lib/apt/lists/*

# Prevents Python from writing pyc files.
ENV PYTHONDONTWRITEBYTECODE=1

# Keeps Python from buffering stdout and stderr
ENV PYTHONUNBUFFERED=1

WORKDIR /app

# Create a non-privileged user that the app will run under.
ARG UID=10001
RUN adduser \
    --disabled-password \
    --gecos "" \
    --home "/nonexistent" \
    --shell "/sbin/nologin" \
    --no-create-home \
    --uid "${UID}" \
    appuser

# Copy requirements.txt and install dependencies.
COPY requirements.txt .
RUN python -m pip install -r requirements.txt

# Copy the source code into the container.
COPY ./src ./src

# Copy Alembic config and migrations
COPY alembic.ini .
COPY ./migrations ./migrations

# Switch to the non-privileged user to run the application.
USER appuser

# Expose the port that the application listens on.
EXPOSE 8000