Update Dockerfile

Dockerfile

@@ -23,6 +23,7 @@ WORKDIR /home/vocalizr/app
 RUN --mount=type=bind,source=uv.lock,target=uv.lock \
     --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
     --mount=type=bind,source=.python-version,target=.python-version \
+    uv python install $(cat .python-version) \
     uv export --no-hashes --no-editable --no-dev -o requirements.txt; \
     uv pip install --system -r pyproject.toml