fix dockerfile, add build CI, deploy example

Dockerfile.server

@@ -2,20 +2,32 @@ FROM python:3.12-slim
 
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
-ENV PYTHONPATH=/app/gen/python:/app/python/packages/officeconvert/src:/app/python/packages/server/src
+# Protobuf/gRPC stubs live outside the venv-installed packages
+ENV PYTHONPATH=/app/gen/python
 
+# libreoffice: soffice (headless PPTX→PDF); poppler-utils: pdftoppm; fonts-dejavu-core: baseline fonts
 RUN apt-get update && apt-get install -y --no-install-recommends \
     libreoffice \
+    libreoffice-impress \
     poppler-utils \
     fonts-dejavu-core \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 
+# Hatch (pyproject readme = ../../../README.md) resolves from each package dir; repo root must exist
+COPY README.md /app/README.md
 COPY python /app/python
 COPY gen /app/gen
 
-RUN pip install --no-cache-dir -e /app/python/packages/officeconvert -e /app/python/packages/server
+RUN pip install --no-cache-dir uv
+
+WORKDIR /app/python
+RUN uv sync --frozen --all-packages
+
+ENV PATH="/app/python/.venv/bin:$PATH"
+
+WORKDIR /app
 
 EXPOSE 8080