Dockerfile

# Use an official Python runtime as a parent image
FROM python:3.11-slim-buster

# Set the working directory inside the container
WORKDIR /app

# Install system dependencies required by Playwright, Git, and other libs
# This list is comprehensive for headless Chromium on Debian-based systems.
RUN apt-get update && apt-get install -y \
    # Core libraries for graphics/rendering (for browser)
    fonts-liberation \
    libappindicator3-1 \
    libasound2 \
    libatk-bridge2.0-0 \
    libatk1.0-0 \
    libatspi2.0-0 \
    libcairo2 \
    libcups2 \
    libdbus-1-3 \
    libdrm2 \
    libgdk-pixbuf2.0-0 \
    libglib2.0-0 \
    libgtk-3-0 \
    libnspr4 \
    libnss3 \
    libpangocairo-1.0-0 \
    libxcomposite1 \
    libxdamage1 \
    libxext6 \
    libxfixes3 \
    libxrandr2 \
    libxrender1 \
    libxss1 \
    libxtst6 \
    # Specific to Chromium/GPU support (even if not using GPU, these are for display stack)
    libgbm-dev \
    libasound2-dev \
    # xvfb provides a virtual display server, often necessary for headless browsers
    xvfb \
    # Install Git, required by pip to clone proxy-lite from GitHub
    git \
    # Install Chromium browser, though Playwright often manages its own, this ensures system deps are met
    chromium \
    # Clean up apt caches to reduce image size
    && rm -rf /var/lib/apt/lists/*

# Copy Python dependencies (only core Flask/Gunicorn deps, proxy-lite installed separately)
COPY requirements.txt .

# --- START: Critical steps for proxy-lite and permissions ---

# Create the directory that proxy-lite's recorder insists on writing to
# and grant full permissions. This is a workaround for the PermissionError.
RUN mkdir -p /app/src/proxy-lite/local_trajectories \
    && chmod -R 777 /app/src/proxy-lite/local_trajectories

# Upgrade pip, setuptools, and wheel for a robust Python build environment.
# This addresses potential build issues with older versions.
RUN pip install --no-cache-dir --upgrade pip setuptools wheel

# Install proxy-lite in "editable" mode directly from its GitHub repository.
# This explicitly tells pip to clone and link it, essential for its structure.
RUN pip install --no-cache-dir --no-input --force-reinstall -e git+https://github.com/convergence-ai/proxy-lite.git#egg=proxy-lite

# --- END: Critical steps for proxy-lite and permissions ---

# Install the rest of the common Python dependencies from requirements.txt
RUN pip install --no-cache-dir -r requirements.txt

# Copy your Flask application code into the container
COPY . .

# Install Playwright browser binaries within the container
# This downloads the actual browser executables that Playwright controls.
RUN playwright install chromium

# Set environment variables for Playwright
# PLAYWRIGHT_BROWSERS_PATH: Tells Playwright where to find the installed browsers.
# DISPLAY, XDG_RUNTIME_DIR: Often needed for headless browser environments (xvfb).
ENV PLAYWRIGHT_BROWSERS_PATH=/root/.cache/ms-playwright/
ENV DISPLAY=:99
ENV XDG_RUNTIME_DIR=/tmp

# Expose the port your Flask app will listen on. Hugging Face Spaces requires 7860.
EXPOSE 7860

# Define the command to run your Flask application using Gunicorn for production.
# --worker-class gevent is used because proxy-lite uses asyncio.
# --timeout 300s gives 5 minutes for tasks to complete.
CMD exec gunicorn --bind 0.0.0.0:7860 --workers 2 --worker-class gevent app:app --timeout 300