Add Docker deployment support

Dockerfile

@@ -0,0 +1,27 @@
+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    DEBIAN_FRONTEND=noninteractive \
+    PIP_NO_CACHE_DIR=1
+
+WORKDIR /app
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        ffmpeg \
+        sox \
+        libmagic1 \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt ./
+RUN pip install --upgrade pip \
+    && pip install -r requirements.txt
+
+COPY . .
+
+RUN mkdir -p /app/logs /app/history
+
+EXPOSE 5042
+
+CMD ["python", "server.py", "--config", "config.docker.json"]