chore: update dockerfile and deps

.dockerignore

@@ -0,0 +1 @@
+.venv

Dockerfile

@@ -1,5 +1,4 @@
-FROM python:3.12-slim
-COPY --from=ghcr.io/astral-sh/uv:0.7.15 /uv /bin/uv
+FROM ghcr.io/astral-sh/uv:0.9.5-python3.12-trixie-slim
 
 RUN useradd -m -u 1000 user
 ENV PATH="/home/user/.local/bin:$PATH"
@@ -7,15 +6,21 @@ ENV UV_SYSTEM_PYTHON=1
 
 WORKDIR /app
 
-RUN apt update && apt install -y curl unzip gcc g++
+RUN apt update && apt install -y --no-install-recommends curl unzip gcc g++ \
+    && rm -rf /var/lib/apt/lists/*
 RUN mkdir -p /app && chown -R user:user /app
 
-COPY --chown=user ./pyproject.toml ./uv.lock ./app.py ./*.txt /app
+COPY --chown=user pyproject.toml uv.lock /app/
+COPY --chown=user app.py ./*.txt /app/
 
 RUN chmod -R u+w /app
 
 USER user
 
-RUN uv sync
+RUN uv sync --locked
+
+EXPOSE 7860
+HEALTHCHECK --interval=30s --timeout=5s --start-period=30s \
+  CMD curl -f http://localhost:7860/ || exit 1
 
 CMD ["uv", "run", "marimo", "run", "app.py", "--no-sandbox", "--include-code", "--host", "0.0.0.0", "--port", "7860"]