feat: initial discord meeting bot

Dockerfile

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+FROM python:3.13-slim-bookworm
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends ffmpeg ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY requirements.txt ./requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+RUN useradd -m -u 1000 botuser \
+    && chown -R botuser:botuser /app
+
+USER botuser
+
+CMD ["python", "bot.py"]