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src/DockerFile

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+# Use a lightweight Python image
+FROM python:3.11-slim
+
+# 1. Set environment variables
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
+
+# 2. Install system dependencies for audio and TTS
+RUN apt-get update && apt-get install -y \
+    ffmpeg \
+    libsndfile1 \
+    git \
+    && rm -rf /var/lib/apt/lists/*
+
+# 3. Create a non-root user (Hugging Face requirement for security)
+RUN useradd -m -u 1000 user
+USER user
+WORKDIR $HOME/app
+
+# 4. Install Python dependencies
+# Copy requirements first to leverage Docker caching
+COPY --chown=user requirements.txt .
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir -r requirements.txt
+
+# 5. Copy the source code
+# This copies everything from your local 'src' folder into the container
+COPY --chown=user src/ .
+
+# 6. Expose the port Hugging Face expects
+EXPOSE 7860
+
+# 7. Start the Streamlit app
+# We use 0.0.0.0 to ensure it's accessible within the container network
+CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]