Dockerfile

# syntax=docker/dockerfile:1

# Comments are provided throughout this file to help you get started.
# If you need more help, visit the Dockerfile reference guide at
# https://docs.docker.com/go/dockerfile-reference/

# Want to help us make this template better? Share your feedback here: https://forms.gle/ybq9Krt8jtBL3iCk7

ARG PYTHON_VERSION=3.10
FROM python:${PYTHON_VERSION}-slim as base
RUN apt-get update && apt-get install -y \
    build-essential \
    git

# Install Poetry.
RUN pip install poetry

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

# Keeps Python from buffering stdout and stderr to avoid situations where
# the application crashes without emitting any logs due to buffering.
ENV PYTHONUNBUFFERED=1

WORKDIR /app

# Create a non-privileged user that the app will run under.
# See https://docs.docker.com/go/dockerfile-user-best-practices/
ARG UID=10001
RUN adduser \
    --disabled-password \
    --gecos "" \
    --home "/nonexistent" \
    --shell "/sbin/nologin" \
    --no-create-home \
    --uid "${UID}" \
    appuser

# Download dependencies as a separate step to take advantage of Docker's caching.
# Leverage a cache mount to /root/.cache/pip to speed up subsequent builds.
# Leverage a bind mount to requirements.txt to avoid having to copy them into
# into this layer.

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

RUN --mount=type=cache,target=/root/.cache/pip \
    --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
    poetry install

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

# Expose the port that the application listens on.
EXPOSE 8501

# Specify virtual environment to PATH
ENV VIRTUAL_ENV=/app/.venv
ENV PATH="$VIRTUAL_ENV/bin:$PATH"

# Streamlit needs to healthcheck the port
HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health

# Run the application.
ENTRYPOINT ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0"]