Create Dockerfile

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y \
+    gcc \
+    g++ \
+    build-essential \
+    ffmpeg \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY bot.py .
+COPY firebase_admin.json .
+
+RUN useradd -m -u 1000 botuser && chown -R botuser:botuser /app
+USER botuser
+
+CMD ["python", "bot.py"]