Dockerfile

FROM python:3.9-slim

# Install system dependencies
RUN apt-get update && apt-get install -y \
    git \
    gcc \
    g++ \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# Set Matplotlib temp folder
ENV MPLCONFIGDIR=/tmp/matplotlib

# Set working directory
WORKDIR /app

# Copy requirements first and install them
COPY requirements.txt .
RUN pip install --upgrade pip
RUN pip install -r requirements.txt

# Install torch separately (before detectron2)
RUN pip install torch==2.0.1+cpu torchvision==0.15.2+cpu torchaudio==2.0.2+cpu --index-url https://download.pytorch.org/whl/cpu

# Install detectron2 separately
RUN pip install 'git+https://github.com/facebookresearch/detectron2.git'

# Copy full app code
COPY . .

# Run
CMD ["python3", "app.py"]