migrate to uv; add docker configs

Dockerfile

@@ -0,0 +1,13 @@
+FROM python:3.12-trixie
+COPY --from=ghcr.io/astral-sh/uv:0.11.4 /uv /uvx /bin/
+
+WORKDIR /src
+
+COPY pyproject.toml uv.lock /src/
+ENV UV_NO_DEV=1
+RUN uv sync --locked
+
+COPY app /src/app
+WORKDIR /src/app
+EXPOSE 8000
+CMD ["uv", "run", "main.py"]