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# ────────────────
# Stage 1: Builder
# ────────────────
FROM python:3.10-slim AS builder
# Install build dependencies
RUN apt-get update && apt-get install -y \
build-essential \
gcc \
g++ \
pkg-config \
libmupdf-dev \
&& rm -rf /var/lib/apt/lists/*
# Upgrade pip and install wheel
RUN pip install --upgrade pip setuptools wheel
# Create virtual environment
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
# Copy requirements and install dependencies
WORKDIR /build
COPY requirements.txt .
# Install Python packages
RUN pip install --no-cache-dir -r requirements.txt
# ────────────────
# Stage 2: Production
# ────────────────
FROM python:3.10-slim
# Install runtime dependencies
RUN apt-get update && apt-get install -y \
poppler-utils \
tesseract-ocr \
tesseract-ocr-eng \
tesseract-ocr-fas \
mupdf-tools \
libmupdf-dev \
ffmpeg \
libopencv-dev \
libgl1-mesa-dri \
libglib2.0-0 \
libsm6 \
libxext6 \
libxrender-dev \
libgomp1 \
libgbm1 \
libxss1 \
libgtk-3-0 \
libxtst6 \
libxrandr2 \
libasound2 \
libpangocairo-1.0-0 \
libatk1.0-0 \
libcairo-gobject2 \
libgdk-pixbuf-2.0-0 \
libffi-dev \
libssl-dev \
curl \
wget \
sqlite3 \
&& rm -rf /var/lib/apt/lists/* \
&& apt-get clean
# Create non-root user
RUN groupadd -g 1000 appuser && useradd -r -u 1000 -g appuser appuser
# Copy virtual environment from builder
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
# Set working directory
WORKDIR /app
# Copy all files
COPY --chown=appuser:appuser . .
# Pre-download TrOCR model to speed up startup
RUN python -c "from transformers import TrOCRProcessor, VisionEncoderDecoderModel; \
TrOCRProcessor.from_pretrained('microsoft/trocr-base-printed'); \
VisionEncoderDecoderModel.from_pretrained('microsoft/trocr-base-printed')" || echo "Model download failed, will download at runtime"
# Environment variables
ENV PYTHONPATH=/app
ENV TRANSFORMERS_CACHE=/app/cache
ENV HF_HOME=/app/cache
ENV LOG_LEVEL=INFO
ENV ENVIRONMENT=production
ENV PYTHONUNBUFFERED=1
# Switch to non-root user
USER appuser
# Expose port
EXPOSE 7860
# Healthcheck
HEALTHCHECK --interval=45s --timeout=30s --start-period=180s --retries=10 \
CMD python -c "import requests; requests.get('http://localhost:7860')" || exit 1
# Start Gradio app (not FastAPI)
CMD ["python", "app.py"] |