Dockerfile

FROM python:3.11-slim

# Prevent interactive prompts during package installation
ENV DEBIAN_FRONTEND=noninteractive

# Enable the contrib repository in Debian to access MS fonts
RUN sed -i 's/Components: main/Components: main contrib/g' /etc/apt/sources.list.d/debian.sources || true

# Install dependencies, LibreOffice headless, and a comprehensive set of fonts
RUN apt-get update && apt-get install -y --no-install-recommends \
    libreoffice \
    libreoffice-writer \
    libreoffice-impress \
    libreoffice-calc \
    libreoffice-draw \
    fonts-dejavu \
    fonts-liberation \
    fonts-liberation2 \
    fonts-noto \
    fonts-open-sans \
    fonts-roboto \
    fonts-freefont-ttf \
    cabextract \
    xfonts-utils \
    curl \
    # Pre-accept EULA for MS fonts (msttcorefonts)
    && echo "ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true" | debconf-set-selections \
    && apt-get install -y --no-install-recommends ttf-mscorefonts-installer \
    # Clean up APT cache to keep the image slim
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Install Flask for the web service
RUN pip install --no-cache-dir flask

# Set up the working directory inside the container
WORKDIR /app

# Copy the CLI converter script, web server code, and HTML template
COPY converter.py /app/converter.py
COPY app.py /app/app.py
COPY templates/ /app/templates/

# Expose the Flask web server port
EXPOSE 7860

# Set the default command to start the Flask web application
CMD ["python", "/app/app.py"]