docker ready deployment

discord/Dockerfile

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+FROM python:3.12-slim
+WORKDIR /app
+RUN apt-get update && apt-get install -y libpq-dev gcc && rm -rf /var/lib/apt/lists/*
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . .
+RUN useradd -m botuser
+USER botuser
+CMD ["python", "discord_bot.py"]