FROM python:3.9-slim

# Installation der Bildverarbeitungs-Abhängigkeiten (Wichtig für Pillow)
RUN apt-get update && apt-get install -y \
    libjpeg-dev \
    zlib1g-dev \
    libfreetype6-dev \
    liblcms2-dev \
    libwebp-dev \
    tcl-dev \
    tk-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

CMD ["python", "app.py"]