Dockerfile

# Dockerfile (run non-headless Chrome via Xvfb)
FROM python:3.12-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PORT=7860 \
    ZD_HEADLESS=false \
    NO_INITIAL_FETCH=false

WORKDIR /app

# Install system deps including Xvfb and Chromium
RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates \
    curl \
    wget \
    unzip \
    xvfb \
    dbus-x11 \
    x11-utils \
    fonts-liberation \
    libnss3 \
    libxss1 \
    libasound2 \
    libatk1.0-0 \
    libcups2 \
    libx11-xcb1 \
    libxcomposite1 \
    libxdamage1 \
    libxrandr2 \
    libgbm1 \
    libgtk-3-0 \
    libxshmfence1 \
    procps \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Install Chromium (Debian package). If that fails on some base images,
# adjust package name to chromium-browser.
RUN apt-get update && apt-get install -y --no-install-recommends chromium \
    || true && rm -rf /var/lib/apt/lists/*

ENV CHROME_BIN=/usr/bin/chromium

# python deps
COPY requirements.txt /app/requirements.txt
RUN python -m pip install --upgrade pip setuptools wheel \
 && pip --no-cache-dir install -r /app/requirements.txt

# app files
COPY . /app

# start script
COPY start.sh /app/start.sh
RUN chmod +x /app/start.sh

EXPOSE ${PORT}

CMD ["sh", "-c", "/app/start.sh"]