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Dockerfile

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+# Use Python 3.11 slim image for smaller size
+FROM python:3.11-slim
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+ENV FLASK_APP=app.py
+ENV FLASK_ENV=production
+ENV DATABASE_DIR=/app/data
+
+# Set working directory
+WORKDIR /app
+
+# Install system dependencies including ffmpeg for pydub
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ffmpeg \
+    libsndfile1 \
+    curl \
+    && rm -rf /var/lib/apt/lists/* \
+    && apt-get clean
+
+# Copy requirements first for better caching
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Create the default database directory inside the container
+# This will be used if no volume is mounted
+RUN mkdir -p /app/data && chmod 777 /app/data
+
+# Also create the external mount point directory
+RUN mkdir -p /opt/apps/audiobook-studio-pro-v3 && chmod 777 /opt/apps/audiobook-studio-pro-v3
+
+# Expose port
+EXPOSE 5009
+
+# Health check - with longer start period to allow DB initialization
+HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
+    CMD curl -f http://localhost:5009/health || exit 1
+
+# Use entrypoint script to ensure directory exists
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["gunicorn", "--bind", "0.0.0.0:5009", "--workers", "2", "--threads", "4", "--timeout", "300", "--access-logfile", "-", "--error-logfile", "-", "app:app"]