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/engine/reference/builder/

FROM python:3.13.2-slim AS base
RUN apt-get update
RUN apt-get upgrade -y
RUN apt-get install wget -y
# 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/develop/develop-images/dockerfile_best-practices/#user
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.
RUN --mount=type=cache,target=/root/.cache/pip \
    --mount=type=bind,source=requirements.txt,target=requirements.txt \
    python -m pip install -r requirements.txt


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

RUN wget https://logos-download.com/wp-content/uploads/2016/03/DB_Deutsche_Bahn_AG_logo_logotype_emblem-700x495.png -O static/db.png
RUN wget https://upload.wikimedia.org/wikipedia/commons/a/a9/Arverio-by-logo.svg -O static/goahead.svg

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

# Expose the port that the application listens on.
EXPOSE 8080

# Run the application.
CMD python app.py