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Dockerfile

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+FROM node:20-alpine AS frontend-builder
+
+# Build frontend
+WORKDIR /app/frontend
+COPY frontend/package*.json ./
+RUN npm ci
+
+COPY frontend/ ./
+# Build for production with relative API paths
+RUN npm run build
+
+# Main container with Python and built frontend
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    curl \
+    ffmpeg \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy and install Python dependencies
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy backend application
+COPY . ./
+
+# Copy built frontend from builder stage
+COPY --from=frontend-builder /app/frontend/dist ./frontend/dist
+
+# Create necessary directories
+RUN mkdir -p uploads
+
+# Set environment variables
+ENV PYTHONPATH=/app
+ENV FLASK_APP=app.py
+ENV FLASK_ENV=production
+
+# Expose single port
+EXPOSE 12015
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --retries=3 --start-period=40s \
+  CMD curl -f http://localhost:12015/api/health || exit 1
+
+# Run with Gunicorn for production
+CMD ["gunicorn", "--bind", "0.0.0.0:12015", "--worker-class", "gthread", "--workers", "4", "--threads", "8", "--timeout", "120", "--keep-alive", "10", "--max-requests", "2000", "--max-requests-jitter", "200", "--forwarded-allow-ips", "*", "--access-logfile", "-", "app:app"]