add dockerfile and release first version

Dockerfile

@@ -0,0 +1,17 @@
+FROM python:3.9-slim
+
+WORKDIR /app
+
+RUN pip install uv
+
+COPY pyproject.toml uv.lock ./
+
+RUN uv sync --frozen
+
+COPY . .
+
+RUN useradd --create-home --shell /bin/bash app && \
+    chown -R app:app /app
+USER app
+
+CMD ["uv", "run", "python", "main.py"]